+1 for the Conti Sport 1000, I had a set on my Centurion Pro Tour Rain bike commuter. Got approx 3,000 miles out of them with nary a flat plus I ran them at 90 pounds on the non hooked Weinmann rims with no blow off problems. Found mine at a swap meet 2 for $10 & heard they were discontinued & not available. Believe I will get some of those Nashbar specials.