I don't know many people who have had experiences nearly as positive with Gatorskins as the Bontrager's Hardcase tires. They have a Kevlar lining, pinchflat-protecting ridges, and a coarse weaving on the sidewall to ward off the random sidewall puncture. I ride them on all my road bikes and almost NEVER get a flat. My commuter has at least a couple thousand miles on roads littered with broken glass and those accursed wire pieces from steel-belted radial tires with no flats to date. Both tires even have chunks of rubber missing from the tread and even have the Kevlar exposed and I've foolishly been riding them without issue for quite a while.