cymbalholics is the closest I've seen, but I've noticed more than one knuckle-dragging heathen over there (with 2oo2s and new Zildjians with brilliant finishes, lol). I don't think anyone's come up with perfect way to screen out the riff-raff.
Nice idea. I was about to start a thread on exemplary recorded performances of jazz standards with the idea of being able to recommend a disc library for students of jazz. But a dedicated forum would be a better place to develop that kind of idea.