Monkey skin, no really, I have no idea, And I don’t think any one else does, have you tried calling you local bike stores and asking them, make it a poll, and call 20 bike stores all over the nation, the grip that gets the most responses is the one you want to by. I am sure the Google can help you out. Don’t bother with biking magazines, they just sell ads and every ad is going to tell you that it is the best. Cheers, hope this helps. :)