D200 user here, they go very cheaply since the D300. The layout of the D300 resembles the D200 for 95%, most functionality has stayed the same. the biggest differences are a bigger screen, improved AF and better noise performance. The D200 is still an excellent, very capable camera. Only noise performance is a bit outdated, but below ISO800 there's no problem.
they're fine cameras, with less clutter in their layout than the Dxx series. no idea if the very recent Dxx cameras have better dynamics and color reproduction, because that's what it's all about. I started shooting film again recently, and am buying myself into the leica M system. Just watch out because digital colors have a way different feeling than film. I prefer digital colors for daily shooting, but will use some Velvia from time to time.