Ol' Fuj came equipped with a set of 700 x 25 ugly, no-name, quite generic Kenda tires. I didn't have any flats for 3,500 miles. I got spoiled. I tried in vain to get some of these tires as replacements. The replacement tires were the Kenda Kriterium (with "Iron Cloak") in 700 x 23. They roll really well, but they are too flat-prone for my liking. I hit something on the road a while back, and the Kriterium on the rear was sliced open. I went to the nearest LBS, and the proprietor installed a Vittoria Rubino Tech. It rolls OK, but it has been flat prone of late.
Today, I went to the LBS to look at tires, and here's what's available in 700 x 23:
Continental Grand-Prix Super Sonic
Schwalbe Evolution Stelvio
Continental Ultra Gator Skins
Schwable Marathon Plus
I would appreciate any guidance/experience you may have with regard to these tires. I'm looking for something that rolls reasonably well but is not so flat prone. The proprietor of the LBS said that he runs the Schwalbe Marathon Plus on his bike, that they are almost flat proof, and that they are HEAVY. I'm probably not looking for HEAVY.