me and pxracing went with the stage III's, primarily because it's a new carbon blend material with a 6 puck design (better everday driveablility). . .I'm getting it installed next week, I'll post results as I see 'em. . .it's an overkill in terms of power, 440lbs/ft of tq, but hey, I'll squeeze everything out of her. . .I didn't want the Kevlar issue with my new fidanza flywheel, so I thought the carbon blend was a better match, read the GB section, I think we discussed pro's con's.