I was wondering if anyone could tell me what size mouthpiece is best for playing sop. I've been playing sop for nearly 2 years after a move from front row and have tried a Dennis wick s which i found gave me a big fat sound but i struggled with anything over c on the stave. I'm currently on a schilke 11ax which is ok register wise but gives me a thin sound and is rather fluffy when playing quiet!!!! any suggestions would be grand!!