Actually, I ride both. My "fastbike" has GP4000, my "farbike" has Gatorskins. I ride on NJ roads that provide lots of "puncture opportunities." I have replaced some very light, very comfortable tires because they just flatted too often, even though the ride was truly superior. GP4000's have been quite good, only about 3 punctures in maybe 700 miles, to guess. Definitely better ride than the Gators, but... The Gators: do. not. flat. Of course, I don't want to tempt the Gods, but, seriously, I have not gotten a flat with the Gators since install. So when I'm going "really out there" on a long haul, I'll take the Gators everytime. And running them at about 85psi, they're certainly not harsh or distracting.