I think it is most important to figure out what works for you. Sure, maybe Cervelo measured 50,000 people and determined that on average men and women are the same. But my husband is 5'8' and I'm 5'3 and his legs are only about an inch longer than mine. He and I need very different bikes. I don't know if I'm the one who's not "average" or he is, but a standard men's bike doesn't work for me. Ride lots of different brands of bike before you decide what's best!