So, you used it a couple of minutes at a tradeshow and knew it was crap.
Yet you own an “unhandy” 1DX II and a “incredible bad” 4k 5D. Didn’t try those before you bought them?
The 5D must be the mark IV with the same 4K video crop, so why did you buy that?
I don’t have the illusion I can teach you stuff though, without some form of common sense the learning curve would be too steep.
Bought the 1DX II for video (where it is fine, but only if you dont plan to shoot a lot, since the data rate is insane).
Bought the 5d IV for photography, (where it is fine, unless you need more resolution or speed)
Right now we do a lot of video production where we need to shoot a lot of footage in a studio. Right now we stick to full-hd, but (as you probably now) the quality of the 1d and 5d in fullhd is pretty bad (when compared 1:1 to Lumix gh4 or gh5 or sony a7 whatever in full-hd mode). We would love to change to 4k, but that would leave us with about 1,5tb of data per day (so about 5tb if you consider 2 workstations and one backup). This is not okay for us.
So this leaves me this option, if I want to stick to canon:
I buy 2 Canon C200 for 20.000$ in total and keeep my 1dx II and 5d iv (and 5d iii backup) (4.000 and 2000$).
Or I sell my 3 cameras for 7.000$, spend 6.000$ on 2 sony a7r III and got 2 photo cameras that are way more capabable and also way better on the video front (since I dont realy need the 60fps4k of the 1dx II).
But please, feel free to explain to me, what exactly canon offers, If you need to produce 4k footage. Maybe I am missing an option. Or maybe, canon just totaly neglected this market (and we need at least a little bit of depth of field, so camcorders are not an option). At least I cant see anything that is remotely affordable to run 4k productions. I would even be fine with full-hd, if the compression wasnt THAT bad on the 5d iv and 1dx ii...