tough to say. i went with the hiro because it was wider than the olfe option that was in the MTO as well. I would say that it wasnt strictly the width that was the issue, just generally they are half a size too small. most of my other shoes are a 9, or a 9wide. I have a pair of carmina simpson in a 9.5 though, and theyre tight across the top.theres lots of discussion in the meermin thread about how the different lasts fit, or you can enquire to meermin directly.