Hey Jen, after riding the Scott for much of August, I spent the last couple of days on the Cervelo S2 with the Zipp 404s. The S2 is an astonishingly comfortable CF bike, and the Zipp 404s are very stable solid and fast wheels (my 404 clinchers have a Powertap hub on the rear). Arguably the ideal race bike in many respects. Love the Addict, but that S2 really is nice, and more comfy, particularly on nasty roads.