The rim of the mouthpiece has a large effect on comfort. In addition to comfort, the contour of the rim does have effect on your performance flexibility between partials and range. Before we answer this question, let me preface this that all statements about what a mouthpiece will or won't do for you are merely a place to start. If you want support in your range, you might look towards finding a smaller diameter or shallower cup. However, after trying a smaller shallower mouthpiece, you may find that you actually prefer a smaller diameter with a deeper cup, or wider diameter with a shallower cup... or none of the above! Based on the sound you want to create, your facial anatomy, and a host of other variables, you may not fit solidly into a mouthpiece "rule of thumb" but having a place to start your search is key.
D Denis Wick Discuss