Fashion, and landscapes basically with the 5D3
When i took them back to the store they could visibly see the banding on the back lcd screen it was that bad. So they refunded them without question.
Some people believe i got bad copies - but I'm not game to buy a 3rd.
Metering is very very accurate on the 1DX - i believed it was 0.5 under each shot but if you look at the target points RBG values its protecting the target from blowing a channel - its rather interesting how they did it. It's not right to my eye but its correct via histo.
The 5D3 is basically identical to the 7D (which to my eye always looked good).
I've owned both so was just giving a little input to someone looking at moving up the series. It may not fall inline with everyones experiences but they are mine 
I agree, if your 5D3's are gone and you have a 1DX, no need at all to have a 5D3 if you don't currently have one. Here's what I'm going to do. For football and track, which are outdoors, I'll shoot with the 1DX and 1D4. For indoor sports, I'll use 1DX and 5D3. No flash allowed anywhere in indoor sports, especially college. And for night football games or night sports outside, I'll probably shoot with the 1DX/5D3 combo again. Also, I can use the 1DX/5D3 combo for weddings. My 1Ds3 is great for ISO 50-400 shots outside, and fantastic for landscapes, but that stuff doesn't make me any money. I'd like to take on senior pictures, which in that case I could use the 1Ds3/5D3 combo. However, I'm not narrow minded enough to believe that the 1DX's 18mp wouldn't be enough vs. the 5D3's 22. Time will only tell and it could very well end up I sell some cameras and get another 1DX or even a newer camera that comes out. I am impressed so far though, with the 5D3's and 1Ds3's color. I did print a few mini-posters and those 21 and 22 mp's came in handy. Sports though, who knows, I could end up having to shoot in jpeg. Canon made too many good cameras
