I've been using Supreme Piano for a few months now and am really impressed. The sound quality is great and the economic vst size doesn't take up the memory real estate of purely sample-based pianos. But what really impresses me is the versatility and programmability of the piano sounds. There are so many paramaters, all clearly laid out on the GUI, to shape the sound as you want it. Intuitive, flexible and a dynamic sound. I rarely use my big sample-based pianos now.

I can't really fault how this plugin sounds. It's definitely the best sounding piano plugin I own, and sounds as nice as the nicest piano sample libraries, but with infinitely more flexibility.