The best advice you'll get here is to try before you buy. And to have a proper fit. Cervelos aren't cheap, so you want to be sure that you have the right fit before handing over some serious cash.

At 5'10", are you REALLY riding a 50 cm frame and having reach issues? I am 5'10, and ride a 54 cm bike. I have been professionally fit, and this is the perfect size for me.

Good luck, and let us know how you make out!

SheFly