I received my D7100 last night. Yippi for me. I traded in a D90 and D7000 and I'm very happy. No buyers remorse. Here is what I've found so far. 1. The flash formula has changed. Too early to tell if its a good thing or a bad thing. On my D700 if I pop up my internal flash and manually set my camera to 1/60th f4 and letting the ISO float (shooting something close so I'm not trying to light the world), the D700 uses ISO 200 (lowest iso it can). On the D7100 same settings, it floats up quite high. Sometimes as high at ISO 6400 with flash, but normally about 1/2 of ambient ISO. Meaning if an ambient shot needs ISO4000, using flash it shoots at ISO2000. Using an SB600 and this is not nearly so pronounced, but still not at the lowest ISO. So I'm thinking its some sort thing they are doing to reduce the flash output. I even called Nikon support about it and they had no idea. It could also just produce better overall results. Time will tell, but not a deal breaker, but surprising to have an ISO 6400 shot when using a flash. 2. The AF System lacks one setting the my D700 has. In AF-C, you can set it to release, release + focus, or focus. I normally set AF-C to release + focus. On the D7100 you do not have the middle option. Just release or focus. I won't know for a little while if that makes a difference, but will put it through its paces on a 5k road race soon. 3. My D700 still kicks butt. Generally comparing photos of people coming out of my D700 are just better. Better overall exposure balance, better ISO and better overall for my type of shooting. I do think full frame makes a difference and on the D700 the mix of everything is just right. However, the D7100 is no slouch. The 24mp is really nice, noticeably nice and makes me no longer afraid of the D800 at 36mp. Even at ISO 6400 there is plenty of pixels to make a nice looking photo when downsampled, but really ISO 1600 is about as high as you generally want to take it. The AF system appears to be as good at my D700. 4. Using Nikon Transfer (end of life, no longer supported), I can't open the images with Lightroom 4.4. Directly transferring them from the camera and they open without issue. So I have no idea what Nikon Transfer is changing, but its time to move on from Nikon Transfer. 5. The standard mini USB port is now some sort of super micro USB port, so you have to use the cable supplied in the box unless you already have one laying around. I do feel like I finally have a suitable backup to my D700 that I can use for other things as well, though not a complete replacement pretty darn close and DX has the zoom benefits, so they compliment each other fairly nicely.