My advice would be to try one on at a bike store to be certain that the frame size is right for you.
I found a used Cannondale on Ebay, a size 43, and almost bought it for a steal. I went and tried one on and found the 43 was way too small! However the Trek that I just bought is a 44 and fits perfect.
Apparently different brands run different sizes, although you would think 43 cm is 43 cm. It depends on where it's measured from and to (that's how it was explained to me, anyway)
"I have achieved oneness with the road - Please dial 911 for me" - Unknown
"A bicycle ride is a flight from sadness." — James E. Starrs, The Literary Cyclist
"We run, not because we think it is doing us good, but because we enjoy it and cannot help ourselves...The more restricted our society and work become, the more necessary it will be to find some outlet for this craving for freedom."
-Sir Roger Bannister, first runner to run a sub-4 minute mile
| current weight: 123.4