| I'm not sure what I reacting to, but I have played both the Bach 3C and the Schilke 13C4. After concluding that these aren't really very "comparable" like some mouthpiece comparison charts suggest, I find the 3C to be the best. The 13C4 feels smaller, gives less flexibility, and more limited and a less bright tone.
I'm not sure if it's differences in the rim, or the diameter, or the cup, or all the above, but tone, flexibility, and comfort are far superior for me on a 3C.
I would say that I prefer a rim with the sharp, but not too sharp, inner edge of the standard Bach 3C; i.e., some amount of sharpness, but not as sharp as the 7C. And I prefer the 3C cup shape and depth better than Schilke.
There is "comfort" on a 1 1/2C on which I can hardly feel any inner edge at all. While it feels comfortable, I do not feel the security of execution that the presence of an inner edge provides. Gives too "vague" of a feeling.
I prefer a rim like a Bach 3C... |