I have been wearing Asics for several years now. Started out with the Cumulus 10 then changed to the nimbus 12, skipped the nimbus 13 and now the nimbus 14. The 14 to me does feel a tad bit more narrow than the 12 but I am comparing an almost worn out shoe to a brand new one. I have put several miles on them and they felt great from the time I put them on. My only complaint is that the strings are shorter than I like. You would think that a shoe at this price point would have nice, long shoelaces.