I've been VERY happy with my Vittoria Randonneur Pros (26x1.5 @ 90 PSI). No flats so far, and as a Clydesdale who rides 15 miles every day on poor condition roads that seem to have a lot of glass, small rocks, and wire debris, I was used to getting flats very regularly. They handle decent dirt and gravel trails well too, even fully loaded for touring. Switching over from my Continental 26x1&1/8th (@ 120 PSI!) Gatorskins that I run in the winter, I thought the Randos were going to feel slow, but they are surprisingly fast.