I have been running in Vibram FF for a while and was about to look at their new hard to find 'formal' versions. (KSOs)
However, in Dillards I found a pair of ECO ROCK CAIRNS which have a fairly flexible sole - and are comfortable.
I don't see them on the ECO web site, but I did see a shoe called BIOM which is touted as a 'barefoot' shoe.
Looks interesting, although around $200