The 1D C in my opinion looks very nice.
But it is $12,999 (maybe even $15,000?) and that is the problem. The Blackmagic is $3000. Shoots 12bit raw. You may have heard of it
I was of the same opinion. But then found out Wilkinsons cameras are offering interest free on the 1dx. When the 1dc comes out it will probably be the same. based on current preorder prices in america the 1dc works out £1500 more than the 1dx. People waste £8000 interest free on a new ford fiesta!, I'd rather cycle on my pushbike and have a 1dc which can take photos at the most professional level before medium format, while also shooting lovely movie (maybe only slightly better than the 1dx, but I think the 1dx looks rather good. ). I recon shooting 4k, applying some softening to the 4k and downscaling in post to 1080 will yield some nice organic stuff. There is also the added benefit of having 4k to fall back on and remain current a few years down the line.
I think if I had this costing me £150/month on interest free for 4 years I'd be making sure I was getting the work in to pay for it. I recon it would still be a viable tool in 4 years.