Actually that was quite opposite for me. I bought a metal NY Super Jazz 7* first which and it was a great-sounding mouthpiece for rock and funky stuff. But then I switched to the stock hard-rubber Vintage 7 that came with my classic tenor. I find it more free-blowing coupled with the FL Ultimate lig and it gives a very round creamy and sweet sound, very traditional tenor warm/darker sound and is a fun to play, more free-blowing for me than NYSJ. But to each his own, of course.I found my hard rubber vintage tenor piece to be a bit stuffy, so I flipped it in a trade. I later obtained one of Phil's metal Jazz model pieces that I use quite often, because it's more free blowing, but still has a sophisticated core to the sound.