Thought I would chime in to express how delighted I am with my Black Widow 8* piece I got about 6 weeks ago, from the perspective of a guy who rarely gigs out and does most of his playing recreationally with friends doing blues, rock and country- nowhere in league of the guys Mark has posted clips of.
I've tried a wide variety of mouthpieces on a wide variety of horns (my ability to purchase exceeds my talent by a long shot) and this mouthpiece is by far the best at letting me just become one with my horn and music than any other mouthpiece I have tried- it is just amazing. My bandmates instantly noticed a difference in my playing without knowing I was trying a new piece. The drummer asked me to move so I wouldn't drown him out. I can growl out nastiness on Big Legged Woman, or get sweet on Tennessee Whiskey.
It not has cleared off my practice area from a bunch of clutter from various pieces and reeds and all, it has cleared the clutter of my mind of thinking about the mouthpiece and just letting me get into making music. If I had to give one word for the piece: FUN!