No flats in 1400+ miles since April.
700x23 IRC Redstorm in front @90psi and CST Compressor in back @100psi. I watch for sharp things, and am usually able to dodge around them. In years past, I have averaged around 1 flat per thousand miles. Twice in the past 5 years the sharp object has cut the tire enough to ruin it, which explains why my tires don't match.