So I'm a size 11.5 Wide US, and I got the 10.5 US Aragon boots. Great fit, super comfortable, not too tight or stiff at all. My only complaint is that the "tuck room" at the top is not super roomy so thick jeans won't fit too well. This is my first set of race style boots and they are no less comfortable than my touring boots or me riding shoes. I will say that with a 1 full size difference in fit from other shoes, try before you buy. All in all 4.5 stars put of 5 because of the supprise in the fitting.

Not sure if this is the right place, I don't see a reviews section.