I have the D750 since 02.10.2014 and could not be happier. Of course there are some details that Nikon better could have done - for example, AF-On button, 1 / 8000s shutter speed, 1 / 250s flash sync speed, lockable round eyepiece, etc. - but I changed more than willingly from my D800 to D750. Size, weight and feel / handling are at least for me simply the best, the new folding screen and AF system is the hammer, the image quality on each (my) doubts raised and the smaller file size seems to me also located in the EBV. I had both the D600, and the D610, but who had sent me away either with spots on the sensor, or an extreme backfocus in art or mixed lighting situations in the madness before the D800.
Too bad that Amazon "reviews" like the one below not later deletes. Here is the basis of our own ignorance and unwillingness to deal with the camera or manual a beautiful product "broken rated". Even the Nikon support helps a gladly before such "nonsense" (Sorry, had long sought a milder formulation, but without success) is by itself ... ;-)
"I am very disappointed with this" on a first assessment of the D750, which they did not deserve ... ;-)
PS Meanwhile, it has been proposed for a second negative evaluation, which has not in the least to do with the D750. I'd prefer the camera give 10 stars to the rebalance. Amazon is unfortunately not do anything, I think ... ;-)