Well I've been shooting with the D750 a little over a two weeks. So far my impressions of the Camera are very good. I love the built in WiFi, it enables me to get images on my smartphone/table without any extra hardware. Though I love the feel of a big camera body like the D4, as I believe it helps to steady me, and with lens iI use often, like the Nikon 80-400mm, and Tamron 150-600mm. Balance real well in my hands. But the design of the 750, has more the feel of the D810. Plus the swivel out display will allow shots I may not have tried before due to my knee's lol! Lastly, one point I have not tried on it yet is the high quality video options it gives me, more on that soon! Till next time, Happy clicks!