I've been riding my old Schwinn which has a 48cm frame. I'm 5'7 but have relatively short legs and a long torso. The standover on the Schwinn is very comfortable, but I feel pretty cramped in the reach to the bars. I replaced the stem ($15) which helped some but I'm also keeping my eye out for a craigslist or ebay find that might fit better until I can save the money for a new bike.
I've read in several places that the top tube length/fit is more important than standover height. I'm wondering if anyone else has compromised on standover to get the right TT fit. Do you get used to it? I like being able to hop off the seat at red lights but wonder if that could be troublesome if the top tube is a little high. Anyone have any thoughts/insights?