I just took off a pair of Michelin Krylion Carbons off of my training bike. They were 25's. I replaced them with Conti GP 4000's and decided to go with 23's. The Michelin's were very good, but I was disappointed in their longevity.

I find the Conti GP 4000's to be extremely well handling tires. Yesterday I was in a 15 min downpour and they never felt like I was going to lose it.

I run Conti's on my commuter bike (gators and contacts). I find the Conti's give me the best price, performance, longevity combination.