My one beef with it is entirely my fault...
I'm ... a little bit klutzy, and the very thin edge of the shank on my beloved mouthpiece has been damaged about three times since I purchased it a few months ago.
In fact... it completely fell out of my tuba and landed on a tiled floor about ...ten minutes before my All State audition

However, it's still... fabulous, and I don't think I'll need to get another mouthpiece in a good long while.