Went back to the shop and test rode the 54 cm Roubaix Sport and 56 Roubaix. I also rode a Sirrus 4.0. Both the Roubaix's rode much smoother than the Sirrus 4.0. I can't think the future shock can make that big of a difference, there must be other aspects to the bike design as well. Ended up buying the 56cm Roubaix. The 54cm Roubaix sport felt very quick to me, almost too quick. I could see myself looking down at the bike computer and ending up hitting a telephone pole. The 56 cm Roubaix was more stable.

One complaint is the brakes feel a bit squishy. They work but don't start grubbing until the levers are pressed hallway down. They start grabbing much quicker on my friend's Trek that I borrowed. I know there are hydraulics involved but is this something that can be corrected so the brakes can start grabbing quicker?