I am shopping 2012 close out CAAD10 3 for $1800. I have sat on a 54cm CAD10 5 and it seems a bit stretched out but I ride a Specialized Roubiax. The dealer can get a 52 or a 54.
I'm 5'9" with a 32 3/4 inseam and long arms. I could probably fit on each bike. On the 54 the seat is way up there to accomodate my inseam and I think the drop on a 52 would be more extreme. Maybe a 54 with a 10mm shorter stem would be best?
Anyone close to 5'9" with long legs? I'd like some feedback on your frame size. I wish I could sit on the 52.