I have Gatorskins 23 mm with Kevlar beads, 28 mm with wire bids, Sport Contacts 37 mm. The Sport Contacts have the edge on grip because they are wider (larger contact area). They are also heavier because of that. Otherwise they are all pretty similar. The Gatorskins are sportier while the Sport Contacts are cushier (i.e. lower air pressure) . My Surly Pacer which I ride on weekends at higher speeds has Gatorskins. The Bianchi Volpe that I ride during the week has Sport Contacts. Both are high quality tires so chose what you like.