I test rode a Roubaix Expert (09 model) and a Cervelo RS (09 model). About 30 miles each. The Roubaix was nice, with crappy wind gusts to 30 mph. It was, "I can ride this." Then I took out the RS. Just even in the parking lot, it felt like, "This bike is made for me." Then took it out on the road, again in the winds. Confirmatory. The Roubaix with a Zertz fork and Bar Phat tape nicely smoothed the road vibes, but at the same time, it was a little too "cushiony". I've done a century on my RS, lots of 50-60 mile rides. week after week of 340, 370 miles. Never felt beat up in the slightest. It's a beauty bike.

I like Specialized, I have two of them. You have to test-ride and see what feels "natural" for you.