So, definately smaller than typical american size.  I found a chart, on vibram's site I think, that put me in 43's (11-11.5).  I am typically a 10.5-11 but tried a 42/43 (of a different model) in REI that would not even come close.  So I did some reading and found the KMD's were the widest, largest model but that at 10.75 I would fall into 43 EU/11-11.5 M US.  With free returns I decided to give it a shot and boy am I glad I did.  This is a day 1 review so I left out a star and the support and comfort but wow are these things comfortable.  I am expecting some pain during the 2-3 week break in but I bought these based on the firsthand feedback from wearers that these are the most comfortable shoes ever - maybe half a dozen or so peeps.  Will update again in a month or so.