I loved the XT3. My only gripe was the lack of IBIS. I've managed to MacGyver my way into fitting the Ronin S on my backpack but unless I shoot higher frame rate and slow it down in post, all 24fps footage are almost unusable with my run and gun style. Even a simple pan reveal shot. I had to part ways with it in favour of S1's better low light, great IBIS, and equally great IQ. I will still use the gimbal for more planned shots.
The 4k60 on the XT3 has a slight crop but otherwise it was great IQ. The thing with Fuji was their lenses breathed so heavily and their pricing really did not make sense. For example, my Panasonic 24-105 is only $200 more than the Fuji 16-55. Their not that much different in size and weight, but the Panny has OIS, longer reach, and macro capabilities.
I will return to the Fuji once sort out my Panny system though. I would get the XT30 + 35mm 1.4 for street photography but in terms of video I am fully invested in the Panny S series.
EDIT: To stay on topic - I am still waiting for my VLOG key in Toronto. I don't understand why they don't just email us the key. It's been 2 weeks now. I mean it was hard getting over the fact that people from Europe was getting the upgrade for free while I had to pay for it, but for it to take this long is just annoying. I would love for @Sage to make a GHA LUT optimized for the S1