Originally Posted by
goldfinch
Felt is going to have the shortest standover I think, on the ZW line, the petite bikes with the 650 wheels. You might not have to go that small. But the most important measurement in my mind is the reach. You just don't want to be stretched out too far. You can get away with a slightly too high top tube. Though it has been nice for me to have a bike where I don't have that issue (my 43cm Madone with 650 wheels, no longer made).
Enjoy your test rides! I wanted to try the Felt but never tracked one down.