Crapton of driving around to far-away stores today. Got to ride a Trek 510 in 57cm. It still rode nicely, but there was no standover height at all and weirdly I still felt all scrunched up. I also got to ride a Surly Long Haul Trucker in a 56cm. Absolutely HATED it. I did, however, get to ride a Kona Sutra, sadly in a 52cm. While my knees really weren't ok with such a small frame, I LOVED the way the bike handled and how it rode. I'm now searching a multi-state area to see if anyone has a 56cm Kona Sutra for me to test-ride.