This is a truly great mouthpiece, especially if you doing a lot of "legit" playing. Very close to a Bach 1.25C.
Pros: easy to play, great tone, perfect rim size and shape
Cons: really geared for "legit" work, a bit more expensive than similar mouthpieces (but really worth the extra cost)
Conclusions: this is a fantastic mouthpiece especially for the "legit" players, you need to try it to enjoy it, and yes, it is one of my three favourites