I use conti 4000's too and like them a lot.. Good balance of a fast tire and decent puncture protection. If you need better grip, I would highly recommend the Gommitalia Calypso tires.. I like using the Conti 4000's on the rear and Gommitalia on the front.. The Gommitalia tires are as good as the Vittoria cx tires at half the price..

http://www.excelsports.com/new.asp?p...jor=1&minor=27