I currently have a sovereign euph, with a besson g70 mouthpiece. When I play loudly in the high register for a while, my teeth start to hurt. You would think this is from playing it the wrong way, but I dont think it is. It hurts my front teeth, the same way loudly playing a tenor horn mouthpiece does, that deep cup effect. Thus, I want to upgrade the mouthpiece, and of course I'll be getting a denis wick (I'm really not interesting in any more of those American ones). But i'm unsure which one to buy, the new Steven Mead mouthpieces, or the old Denis Wick B & H ones?