Currently on the hybrid I have Bontrager tires (700 x 35 -I can check the model later). They're kind of an all season tread on them, and not smooth like slicks. They run at 80 psi. I am thinking of switching to the Gatorskins many talk about here, but am wondering about how well they roll. The current tires, well, sometimes it seems like I'm always working against them, maybe a bit too much friction against the road. Do the Gatorskins (or other tires) roll better? Is it just the psi difference? Just looking for your experiences, thanks.