My LBS gave me the Roubaix today to take for a test ride. Not a super great day with 50-60km/h winds, but maybe it's better to test ride in adverse conditions to see what the bike is really like. The first thing I noticed is the difference in riding position. The bike felt taller and I felt like I was riding "on" the bike versus my Defy where I feel like I'm "in" the bike. The Roubaix was smoother though, especially over road joints and railroad tracks. Was it better? I'm not sure it was better enough to justify the extra expense.