I like the blend of flexibility, grip, and stiffness that the Flex Jazz series offers. The only downside is that the tips wear faster than normal tortex. It's nothing dramatic; I'm not going through multiple picks in a rehearsal or show, but generally, I only get about 5-6 hours use of of one before the tip is pretty well-rounded. In most cases, this isn't a big deal, but it may be highly annoying for anyone who really wants a sharp tip on their picks.