i have the 2, and what bothers me, is that my stumpjumper fsr doesnt fit too well, the rack seems more for a hardtail design bike. i cant even get the bike on the back slot, so i put my wifes rockhopper on the back, and mine in the front, but the front tires must come off to fit both no matter what. so i might go for the 3, i would, if i could do it all over again.