105 is a whole difference setup, especially the new stuff. Just a heavier version of Ultegra/Dura Ace. The new 105 is better than my old Ultegra, which I like. Definitely worth the extra few hundred dollars. Too bad the Cannondale Caad9 doesnt have the 105
Last edited by atcdav; 06-07-11 at 09:00 PM.