Any thoughts? I've been looking at both of these bikes and, I have to admit, the price difference seems to be quite a bit (I'm planning to spend $3500-$4000 on the bike as I already have the wheels). Also, I've heard that the R3 is both stiffer and lighter than the S2. I assume that you could setup either bike to fit roughly the same.
About me: I am a hardcore racer. I rarely go out to just ride, I go out to train. My main focuses are on stage racing (I already have a TT bike FWIW) and hilly road races, but, like any American racer, I do a lot of crits as well.
What I'm really wondering: is the idea of an aero bike really worth it if your the kind of guy who doesn't spend a lot of time in the wind? When I attack, it tends to be to get into a breakaway or at the end of a race. I don't generally go out solo much unless the opportunity is just too good to pass up.
Obviously there will be thorough test rides of each, but I want to get some opinions.