I've found that Armadillos and Continental Ultra Gatorskins peform about the same. They are not puncture-proof, and I still get the occasional flat, usually from center glass or long goathead thorn punctures; but as long as I make sure that the rubber down the center of my back tire is not worn out, I'm fine. You can tell when the rubber is worn out, when the area where the center of the tire meets the road is no longer rounded, but looks flat or square. If I let the rubber get a flat profile, then I can be prone multiple flats on a single day. I have to buy a new back tire every 1.5 years or so (about 5600-6000 miles for me), but have been running the same front tire for 3 years total, and it still looks great.