I started riding Supremes a few years ago and haven't looked back. My first pair lasted about 6000 miles before the sidewall started to tear. They still had plenty of tread though. I've gotten two flats in about 7000 miles, one glass, one a ceramic chip. As they start getting torn up by glass, etc I fill in the holes with RTV silicone. Seems to help keep crap out of there later on.

These tires are so much better made than others I've tried. Their increased initial cost pays for itself in their durability and peace of mind.