I burnt through three friction surfaces using non-organic discs (what an unpleasant learning experience). Since then I've had the JWT TT clutch for about a year. So far it's working great, but I'm putting in a new transmission in a couple weeks, and I'm going to change to the RPS MAX/Street with the segmented flywheel anyway. I'm looking to go with upgraded turbos and the Racelogic traction control in the future, and I'll personally feel more confident with the segmented one. I'll post photos of the friction surface on my Fidanza once its out (early to mid Sept.). I'll be selling the flywheel at that point.