I just did and I am selling it, the D750.
Nikon cannot produce greens, and does all sorts of weird things with colours in general. I am also convinced it applies some sort of noise reduction at higher ISOs in thr raw. Sure,it has no colour noise but it does not have the detail of the 5dmk3. I dont understand why reviewers arent mentioning this!
If you are used to the beautifully made control dials of a canon, think again, the nikons are quite stiff.
I love the light weight of the D750, and I actually like the button placement too, with ISO on the left, etc. But the sensor just isnt as good as Canon!!