I have the Aerlite model in a 45. good shoe but wanted a bit more room, so I ordered a 45.5 of the Evolution. Well it fits SMALLER than the 45 Aerlite. WTH? Personally I can't understand how a shoe maker can be that inconsistent. I was really bummed. There was no 46 available in the white at the time :-(
And of course Northwave's size converter is crazy inaccurate. Says that I'm like a 12-12.5 for wearing a 45. Wrong. I'm 10.5, maybe 11 max.