I am a classical player thinking of getting a new mouthpiece, to enhance my tone - I currently play a Selmer C*, which produces a fine tone, but I am searching for something more. My ideal tone is smooth, full of depth and breadth but also clarity. Not rugged at all. Darker, but not thick or gravelly. Clear, but not too bright, either. Anyway, I am mainly thinking of the Selmer S-90 or the Soloist, and maybe the Rousseau NC4. Any suggestions?