First of all, in most cases you always have to purchase a half size larger when buying running shoes than you would a dress or casual shoe you just wear around the house etc.  So I do have to call some BS on those complaining that these run small.  I can only assume those are people new to running since any runner will tell you running shoes you always go a half size bigger, and at time a full size larger.

Secondly, these are very light weight and after 4 runs so far are showing a great deal of support for my flat feet.  And I couldn't be happier.  My only issue with the shoe is really the price.  I try to go with NB since they are made in the US and not be little four year old children like Nike or the other brands.  But they are pretty cool looking and they do the job well.