And I am the opposite: 5'-6", all torso, no legs. So I need a small frame (so I can stand over it) with longer reach. I once had a Trek rep look at me and say "that (50 cm) bike is way too small for you!" - and then I stood over it and she understood.

I've tested WSD bikes before, and they all have felt wrong - cramped, and like my knees would hit the handlebar. According to my LBS, Trek at least thinks all women have long legs relative to height, and all men have shorter legs. Everyone is different, so try everything you can. A side by side test of the same model in WSD & mens/unisex might tell you a lot. And remember that the frame is the one thing you can't change out - if the reach is right, you can always change handlebars, saddles, etc. And you can change the reach a bit, too, with a different stem.

Happy hunting!