I used to get a few flats a week do to crap in roads, especialy goatheads. I switched to the armadillo pros a little over a year ago and havent had any since, they have more than enough grip, i even race them in some crits and some road races. I once flatted doing 40+ on a descent and was able to stop before crashing, it was my rear tire. I have a set of tubulars, I have never got a flat on them.. mostly using them for racing and some training.. but the front has a slow leak.. it looses 15-20psi overnight.