I'd be interested to have a discussion about this topic. Are you looking for resistance in a mouthpiece or would you prefer it to be as freee blowing as possible? How much resistance is "good" and are there different "types" of resistance or different types of playing where resistance is more or less desirable? How are you measuring/defining resistance? What does more or less resistance do for you in terms of tone, dynamics, articulation, etc? Any thoughts at all really...