I liked my pro 3s and they didn't puncture when new, but they didn't last log - about 1500 miles and when they wore they began to puncture. I've moved to the pro 4 service course as I thought they had improved reliability, but I'm about 1500 miles in again with some signs of wear and a worrying cut on the rear which I have superglued. Time to rethink my strategy I'd say! Let us know how the endurance ones do.