Why not just go and test ride both types and see which one suits you better? I started out with a "racing" bike (Cervelo Soloist Carbon), because at the time when I bought it, I was into triathlons and thought it would be the best option for me. After a year and only doing 2 triathlons, I decided that the racing position was NOT for me. I have a bad back and a more upright, relaxed riding position just suited me better. Plus, my focus changed from triathlon to long distance riding...so a more comfortable riding position benefited me more. I now ride a Cannondale Synapse Carbon Fem 3, and comfort-wise, it is much better for me than the more aggressive and aero Cervelo was.

You really should test 'em both out, to see which type of bike you feel more comfortable on.

Linda