I actually went with none of the above. At 5'10" I didn't think I'd need a WSD, but I surely did feel the difference. 56cm WSDs are hard to come by, but this baby was very comfy and in my price range. And now she's in my garage after an inaugural ride this morning:
Dolce Elite. White with little pink accents would most certainly not have been my color of choice, but tall chicks on small budgets can't be too choosy.