Originally Posted by
bampilot06
Both are great, buy the one that is your size and that you can actually test ride.
This. I have a Domane and love it. My wife tried the Domane and found the Roubaix fit more to her liking.
The Domane achieves seat post compliance through the IsoSpeed, and the Roubaix has more exposed seat post.
Similarly equipped, they are both very nice bikes, and it comes down to what you like better when perched atop it and pedaling.