The quality of the D810 is superb from what I read but we've come at a point we almost have to start pixel-peeping to see that difference. If we'd remove all EXIF data, it's getting pretty hard these days to guess which cam took what shot. It's only in the extremes the one shines some more than the other. I had to make a decision between both and the money burning in my pocket while the 750 was smiling right there in front of me while the 810 had to be ordered did somewhat balance it in its favor.