No kidding, I will not go back to my NB minimus. I have loved those shoes for years but the heel cup and toe box of the merrells surpass the support and roominess offered by the NB.  I am 5'10 and 180lbs and run 12-15 miles a week. I would suggest for those who haven't worn barefoot shoes before, transition down to these. They are amazing, but are vastly different than normal shoes.