Conti Ultra Gatorskins (700x28C) - I just put 8,000 commuting miles in two years on the rear tire with no flats. Wet traction sucks, but they are good for dry conditions. Ride quality is okay.

Vittoria Randonneur Pro (700x35C) - I've got almost 4,000 commuting and levee road miles with no flats so far. Great puncture protection, and they float over gravel pretty well. Great all around tire, but they are heavy and slow for their size. That's the price you pay for durability and puncture protection.

Panaracer Pasela (700X32C) - I got these for $5/pair at a Bike Swap Meet. Best feeling ride I've felt on a tire. I plan on purchasing them again for other bikes.

Forte Pro+ (700X25C) - Okay feel, too many flats, only lasted 1,000-2,000 miles. A total waste of money.

Ritchey Speedmax Comp (700X35C) - Picked these up used for $1 per tire. Great feel on gravel. No flats in about 100 miles.