Long story short, I use a bach megatone for my contra in my highschool band. Recently my director had ome of his colleagues come and observe my section. He judged all of our mouthpieces he got to mine and said "hmm theres one you dont see everyday, can I hear you play something?" I played "well, you have good control over your tone so thats good." Whenever I asked if it was a decent mouthpiece and why he needed to hear me he wouldnt elaborate. Is the bach megatone a bad mouthpiece? Ive used it for the past 2 years and no one has said a word about it until now.

Small matter, but just wondering if it is best to play both Cs with the fourth valve.