It's now time for different tires, but I'm having trouble choosing which one. I know I want a low-profile, slick/semi-slick thread design. And I want sticky rubber and low rolling resistance. My current tires are Schwalbe Super Swan (knobby dirt/mud tire) in 700x35c. I'm looking for the same size tire or slightly bigger, up to 40c. The tires I have narrowed down that'll suit my area (asphalt, gravel, easy/medium singletracks) the best are listed below. Continental Cyclocross Speed 35c: Maxxis Re-Fuse 40c: Kenda Flintridge Pro 35c: Clement LAS 35c: These are the 4 choices I've narrowed it down to. Now, does any of you have experience with any of these tires, regardless of sizes?