I just put some on my hybrid (they came with a wheelset I acquired). I can vouch for the low rolling resistance; I went from 25 mm Marathon Pluses to 35 mm Supremes and actually beat my best time riding home Monday night.
EDIT: The Supremes are apparently not as bulletproof as the Pluses. I started to get my bike together for tomorrow and... had a flat. Turned out a tiny little sliver of glass worked its way in and got through the belts to the tube. Kind of disappointing.
__________________
I stop for people / whose right of way I honor / but not for no one.

Originally Posted by
bragi
"However, it's never a good idea to overgeneralize."
Last edited by Doohickie; 11-04-10 at 09:43 PM.