<p>I went through the exact same process over the last few months, also upgrading from a D80. While I love the idea of full-frame camera for various reasons, I also shoot lots of kids, and realized that the D7100 would give me better autofocus and shot-to-shot performance than a D610, and without needing new lenses (I have 4 lenses and all but one are DX lenses). I would never have been able to sell the home budget committee on a D750, even if I just got a used 50mm lens or something with it to hold me over for a while. While I was deciding, the D7200 came out and that's what I ended up with. At the time it was only $200 more, though even that was a big decision. I think the D7100 would have been great too and especially at the lower price. The AF system on the D7200 is simply, stunningly awesome compared to the D80. The photos also look great up through ISO 6400, at least compared to the D80 at ISO 1600. What more does the average amateur need?<br>
My dream is actually to someday own a Nikon Df (or something similar in terms of appearance and controls), though even if I was able to any time soon, I would probably still use the D7200 a lot.</p>