Campag, I already have the SL2 Roubaix Rival, and I love it. I don't NEED another bike; just exploring some options should I decide I WANT another bike. I've only been on a road bike for eight months, so I'm still learning, but my limited knowledge thus far tells me that the shorter wheelbase would (should?) = quicker power transfer and faster acceleration, and that the more aero position achieved in a racing geometry frame would = better speeds on the flats and downhills, although the advantage gained from both factors may be minimal.

I understand your post above, and it makes perfect sense. My flexibility is such that with little or no warm up, I can get about halfway btwn fingertips and palm in your flexibility test. With a thorough warm up and good stretching, I can just get to full palm.

I certainly wouldn't want both bikes set up exactly the same, geometry-wise. I agree that kind of redundancy would be foolish. My thought was to get something like the Tarmac for my solo 20-mile after work "hard" rides, and continue to use the Roubaix for longer rides and events like RAGBRAI. Also, I'd continue to ride the Roubaix while riding w/ my wife on her Roubaix... usually a very easy spin for me.

Just thinking...