I've got a little over a 1000 miles on a set of Vittoria Randonneur Pro's (32mm) and they're doing great. Ride nice, no flats. I don't know their weight, but they seem reasonable. The bike came with them, but I'd buy them again.

I might try those WTB Slickasaurus mentioned, though. Currently $5.99 ea at Nashbar.com.

Edit: It will be quite awhile till I need tires. The Vittoria's aren't showing any wear yet.