Sizing really does depend on the shape of your foot. I'm a solid US 11 in dress shoes. 10 UK in most. 44s in Common Projects and Butteros fit me fairly well. I'm an 11.5 in all Nikes as another point of reference. I think the Butteros and CPs are just as good as each other. Depends on what styling you prefer. I say have both. I'm tempted to get the Navy one too. So much so, I better get offline before I do.