I've owned a 7100 and really liked it a lot. I didn't keep it for long - I upgraded to it from a D7000, and have since upgraded again to a D750 because I wanted to go with a full frame body. But, the 7100 is a great camera. I'm sure the 7200 is even better, but it is just an evolutionary upgrade, and the differences between the two are small. You mentioned the lack of Wi-Fi on the 7100 - it is available, but requires an add-on adapter from Nikon. The cost for that item is about $50 IIRC. Overall, I'd go with the 7200, but if your budget is tight, you really can't go wrong saving some money with the 7100, and then using some of that savings to invest in lenses.