I'm contemplating buying an '08 Six13 to replace my '03 Litespeed Tuscany, since I plan to race more (road and crit) next year and want more responsiveness from my bike. I don't, however, want to schedule a dentist appt after a century ride. I've read that the Six13 is a great race frame, but also provides a suprisingly smooth ride. I am hoping someone has sufficient ride time on both and can provide a comparison on these bikes. FYI for comparison purposes, I'm keeping my Campy Chorus/Eurus setup. Thanks.