I have been riding a roubaix pro frameset for about a month now. Set up with sram red, trp brakes, specialized stem and bar syntace P6 seat post wheels are ambrosio hubs, dt revo spokes brass nippels and velocity A23 rims, of fulrcrum racing 7 for gravel riding. The weight is around 7,5 with garmin gad sensor and everything. Or as we say ready to ride, i can still save some weight in stem, saddel, QR ti bolts and so on.
Previuesly i have been riding a cube agree gtc 2010, a specialized tarmac SL2 2010 (winter bike) a specialized crux expert M5 alloy frame (2012), and a little time on a Tarmac S-works Sl3 htc (2011)
Is is as stiff at the s-works Sl3 when i have to go up in speed, and closing gaps in group rides sprinting and so on. Stering is precise stiff, and good sometimes i ride in circles because it is funny to make turns on the bike
Comfort is very high, i ride a lot on gravel and crappy roads. And coming from my tarmac which replaced my crux, the change from crux to tarmac was very good comfort wise, but the tarmac is not as stiff as the crux. But moving from tarmac to roubaix felt like cheating, on gravel roads it is sooooooo comfortable fast and stiff. The first time i rode it was at a race, and i could just pick crappy lines, and flying over them and didn`t get beat up as some of the other guys in my group did. And i know specialized also says that, but this my own opinion: it is as race as my tarmac, just sooo much more comfortable, so i can't see a reason to go back to the tarmac... Did i say that i love this bike?