The D7200’s photo quality is excellent for the money, and both JPEG and raw files looks a bit better than the D7100’s starting at about ISO 1600, thanks to slightly finer-grained noise. Otherwise, they’re pretty similar: JPEGs display nice color rendering and exposures, plus good tonal range in the shadows but a little more clipping in the highlights than I expect.
Video looks very good as well, though it can get pretty visually noisy in low light. By default, it tends to blow out highlights just like with stills, so you should really take advantage of the flat profile.