Continental Grand Prix Classic skinwalls, 700x25 only. Retro tread design with up to date materials. Outstanding tire for the money and good looking if you don't mind the reddish-brown sidewalls. Durable, grippy, smooth rolling, low rolling resistance. Other than being a tight fit in my Ironman I can't find a thing to fault with these tires after a year and a half on two bikes. After the raised center tread wears down a bit it doesn't rub on the rear brake bridge. Switching brakes, or filing down the bridge would help but I haven't done either yet. No problems clearing my other road bikes.

My current favorite go-fast tire is the Soma Supple Vitesse SL, 700x23, light brown skinwalls. Best lightweight tire I've ridden, tougher than the Schwalbe One V-Guards I used to ride, better grip, better on chipseal... just a better tire in every way.

And I'm switching my road bikes to latex tubes. Really helps tame the road chatter on chipseal. Supposedly less rolling resistance but I'm mostly after the comfort. I still carry one or two butyl tubes for flat repairs, but have successfully patched a latex tube.