IronFilm

Panasonic will take advandtage of the 2020 Olympics in their own country to launch new hybrids. Tokyo 2020, heck yes, you bet they gonna launch some nice cameras. Pride in their tech and national heritage commands that opportunity like no other!
3 CMOS 2/3 inch 4K  broadcast cameras from Ikemgami and JVC, very recent 4K tech too:)

Gee, is a complete mystery why this got a downvote from a mod! :-P

But @jonpais is completely right, to do tests you need to do them scientifically and controlled conditions to reduce as many variables as possible 

Sounds like you already have a tonne of cameras!

Thus worth looking deep inside yourself to see if you're a GAS sufferer and perhaps you need to nip this thought off at the bud.

One approach which helps for me is to consider ROI (Return on Investment). 

Will the 1D C earn you more money than not having it? Will it do so better than any other place you could put that money? (technical term: "lost opportunity cost". I'm a hard core economics nerd by the way... if you can't tell already! ha)

We're spoiled for choices around that price point! 

Got also the Sony FS700 / Sony PMW-F3 / JVC LS300 / RED ONE / URSA Mini / etc

Have used the Ninja 2, and its monitor is so shit it is hard to really use it as a monitor / recorder.

The Atomos Ninja Blade (I own the Samurai Blade, which is SDI, for my Sony F3) is so dirt cheap as well that I very strongly recommend the small extra cost of this over the Ninja 2 (or instead of a Ninja Blade, a BMD Video Assist is a good choice too). 
 

Gee, is a complete mystery why this got a downvote from a mod! :-P

But @jonpais is completely right, to do tests you need to do them scientifically and controlled conditions to reduce as many variables as possible 

Don't Leave Max, it will be boring as hell here without you!
And maybe the first to have Log might be. "The CvpFileEditor can be used with the HDW-F900R for creation of custom gamma curves. Existing gamma curves, generated for use with the original HDW-F900, can also be applied." 2006 camera.
https://www.bhphotovideo.com/c/product/633399-REG/Sony_HDWF900RPAC1D_HDW_F900R_CineAlta_24P_HDCAM.html

Oh I dunno, maybe because Sony didn't make that sensor? 
https://www.google.com.au/search?client=safari&rls=en&q=d850+sensor+manufacturer&ie=UTF-8&oe=UTF-8&gfe_rd=cr&dcr=0&ei=WZh3WvOQC6PM8gfdsZrwAQ
And according to this list (https://nikonrumors.com/2015/12/16/list-of-all-nikon-dslr-cameras-and-their-sensor-manufacturerdesigner.aspx/) some of the most important cameras Nikon has produced (The D3/s & D4/s which arguably pushed the industry towards low light ability rather than sheer megapixel count) were sensors designed in house. It goes against the grain of "Internet Wisdom", but Nikon has more of a hand in designing their sensors than anyone gives them credit for. In any case, shoot any two Nikons of the same generation and the files mix together just fine in the edit. So why does it count against them because they can get a Sony sensor package with Nikon specs and marry that to a Nikon processor and code that does the actual magic, and save themselves the time and cost of developing a sensor from scratch?  
 

"only"!

For half that price you can get a set of Sony PL lenses:

https://www.bhphotovideo.com/c/product/906631-REG/sony_scl_pk6_f_cinealta_4k_six_lens.html

Talking pure 4K quality alone, the picture seems to have an edge on the D850. Shooting a comparison now, including the GH5S and it's clear. The D850 has less moire and aliasing, more solid and convincing detail, which doesn't have as much false detail on fine patterns. It's a small but significant difference. Codec and colour seem to have an advantage on the D850 as well. I'm surprised. It's like a 'Nikon' 1D C.
I wonder why Sony put all their latest tech into Nikon's 46MP sensor and stuck with the slightly less capable 42MP sensor themselves?
There are other differences though... A7R3 has proper LOG modes not just a flat profile. I've yet to test dynamic range, will do soon.
In low light, I realised I made a mistake in the last test that focussed on the GH5S. The D850 had noise reduction completely off. It really does seem to turn it off and give you a fine noise grain. Need to retest the ISO 12,800 vs A7R3 and see the impact of noise reduction on both cameras, and whether it turns off completely on the Sony (or not) and which has the most capable system of reduction. We all know the A7R3 noise reduction in full frame 4K is pretty much magic. Does the Nikon do a similar job?
If we're talking video features and form factor it's a non-contest... A7R3 cleans up across the board especially with it's superb video AF and stabilisation.

I like you I just think you're wrong.
JK ; ) - Seriously though I just disagree about benefits outweighing the costs. I believe you that there are certainly drawbacks to trying to cram so much info into a small container; as I mentioned I don't shoot SLog nearly as much now, after reading some of your posts. But I know, having compared the HDR and SDR masters of a huge-budget feature, that ultimately HDR is more pleasing to me.
I do appreciate all your posts though! They're educational and make me think. And your posts back in June are actually the reason I even signed up for a forum account... I signed up to argue with you about S Log 

You guys are killing me!  You know, I want to be as liked as the next guy.  When I first started this stuff years ago I got into a huge fight with someone on the Magic Lantern forum.  I insisted each pixel captures a full color.  I went on and on and on.  Much like you guys are doing to me. I feel shame just thinking about it.  In the end, I learned 2 things 1) What a CFA is and what de-mosaicing does and 2) Always consider the possibility I might be not just wrong, but horrendously, embarrassingly wrong.  It's what we do after learning our errors that define us (hint, hint @IronFilm).  Anyway, after the MF thing I try to be like the guy who educated me.  He didn't give up on me and I'm glad he didn't....but it's hard.

Completely different cameras. Size and ergonomics completely different. I would go Canon C100mkII for sure. My favorite workhorse of a camera, low price, extremely capable in high ISO, incredible Dual Pixel AF - the only worthy of pro use, best size per performance codec ever (Canon voodoo here, for sure), deliverable picture almost immediately. Best size and weight for such a camera.
If you care more for the extras @IronFilm mentioned, then C300, but then there are better options out there in that category (he named few, definitely more research to find out the best option as they vary in era, features, weight, ergonomics, ets), and with C300 you need a full rig for it, it isn't "plug n play" such as the C100.
If you want more options for a dead low price, the aforementioned JVC LS300 is an extremely and unexpectedly capable camera. With all the modern bells and whistles (no worthy slow motion though, worst ergonomics than Canon, worst low light capabilities, C100mkII is a low light monster - do not forget), some innovation (prime zoom function, native m43 - S35 sensor!) and in the dead low price (new) was an Atomos recorder (I do not know if the offer still stands) capable of recording 4K/60f, so a camera still relevant for the near future. 
JVC does cameras since forever by the way, in 1978 (yep, when Super 8 film was still king) they did the first ever portable video system, and in 1984 they did the first all-in-one video camera ever (camera and recorder in one box)! 

I've done further analysis and figured I would round the conversation out by sharing it.
Here's some shots from the ARRI reel.
   
His skin is very uniform in hue basically centred on the line in the vector scope, with the exception of his lips, which appear in the overall pic as being of a very limited saturation, but when isolated seem to show more range.  Note that the skin tones are evenly distributed in saturation up to a certain point, beyond which they don't seem to go, however the red in the lips goes further into saturation than the skin tones.
    
It's the same story for this lady, except that her skin tone has the majority of it on the pink side of the indicator line, and her lip colour is almost pointing directly at the Red calibration box.
    
It's the same story for this gentleman, even including the hair in his moustache, with the exception that his lip colour isn't more saturated than his skin colour.
Now, if we turn to Canon and their demo reel From Dock to Dish, which I thought was a reasonable comparison considering that it was the promo for the C200 camera, we get these graphs.
  
These two fishermen both have skin-tones that are not only all on the red side of the indicator line, but there's even a healthy gap.  It does look cold conditions so it makes sense they're a little flushed.
  
This guy also has tiny gap between his skin-tones and the indicator line, and his lips were pointing at the Red calibration box.

This lady is also all on the red side of the indicator line.
So, it appears that ARRI tends to place their skin-tones either next to the line with some of the information on the yellow-side of the indicator line, or they go as far as centring the skin colours on that line (as in the case of the top example), and they're not afraid of going over the line assuming it's balanced (as in the case of the lady in the second example).
Canon, however, placed the skin-tones so that all the information is to the red side of the indicator line, even including a small gap in examples where the hue distribution was less.
So, ARRI are around and over the line, Canon are next to and perhaps a little distance from the line.
In terms of hue variation, both ARRI and Canon show examples of a moderate a amount of hue variation, but ARRI also has examples of lower amounts of hue variation, and Canon showed examples of a greater range of hue variation than ARRI did.  Both aimed their lip colour either at, or nearly at, the Red calibration box.
 
 

To me it was obvious what ARRI's #1 focus of their demo reel for their new camera: skin tones. 

Bit depth and DR are two different things. 

I don't see why you expect one *must* change just because the other changes. (yes, they might, but doesn't mean they're always connected)

I am surprised Canon don't do their own EOS spinner.
It would be lacking some features though to protect the higher end model.

For every blogger like you Andrew, there're 10 sponsored by Canon. Who's going to be louder? As I've said before (and you know too) Canon only works with those who're positive about them as much as possible.
Here's a new example: In a completely unrelated site, someone was saying that the best camera for vlogging is a Canon 6D because some YouTuber recommended it. Turns out Canon has been sending 6Ds to high-profile YouTube vloggers to push the camera for that purpose. You can't deny marketing like that is effective.

Everyone has different experiences. I really disliked the Mac interface when I tried it years ago. Windows gives me no problems. 

AF200! its long overdue!

GH5 is not "marginally" better than the GH4. That is not even close.
I do not think that we will see another NX camera.

This is hardly a rumor, it was simply a three line response to the countless request for comment that says "maybe you will get a gift while you fight" this means absolutely nothing and out of the very long list of what this could mean an NX3 is very very very far down that list.
Here is my list of what this could mean in order of probably
1. Probably means nothing and we are not getting anything.
2. A software update that helps with compatibility with newer phones
3. A software update that helps with compatibility with newer phones & gives minor phone interface improvements because it was easier to connect their new cell phone camera app to the NX1 then to make the old app work with the newer cameras.
...
10,000. They have taken all the tech they learned with the NX to make a concept camera of the future for display at tech shows and showboat what they could do if they wanted.
...
...
1,000,00. they have an NX3 that will be released in two years that is nothing like a camera as we know it and more like a cellphone with 1" sensor like all the other cell phone companies are coming out with now. (actually, this is probably not that unlikely but really has nothing to do with cameras or the NX1)
...
...
10,000,000. they have an NX3 that is an iteration of the NX2 and can use NX lenses.

On Facebook now discussion about a new NX-3 is coming. Who knows more about this rumour?
https://www.facebook.com/groups/SamsungNX1.for.video/permalink/1123178037816446/

Thanks! I've posted in the BMD forums and see if I get lucky!

And then there is the other 10%... who hang out on camera forums such as this

Errr... it wasn't like they finished the GH5 and *THEN* started on the GH5S, rather it was started waaaaaaaaaaaaaay before

No, the Canon doesn't "win". 

Kinefinity with eND for the win:
http://www.kinefinity.com/product-category/kine_acc-en/previous-accessories/mount-adapters/?lang=en
 
Exactly. The market budget alone of Canon is I bet massively bigger then Kinefinity's budget for everything.