Sizing on cyclocross bikes at bike shop vs online
So I was in the burbs and stopped in a bike shop and checked out the surly cross check. Nice bike, I just don't have that kind of loot. So, I was looking at the Nashbar ss cyclocross and bikes direct motobecane fantom cross uno, both 400. Also saw the bikes direct motobecane turino disc brake bike. Anyways, I figured I'd get something as an all weather ride.
Anyways, at the shop, the guy said with the flat bar, a 54 would work, but with a drop bar or bullhorn, since it would have me stretched out much more, I'd probably need a 52 (or i'm guessing a 53, but they don't make that size). Do you think the sizing difference would transfer to these other cross bikes as well? Also- I don't think it would make a difference, but I was wearing sandals with a very thin sole so my standover height might have been a quarter inch shorter than usual. What do you guys think? Is the geo and sizing similar? Should I go with the 52 since these have the drop bars as well?