how narrow is your foot? While carmina might not offer different widths, their different lasts offer very different fits/widths. The simpson last is supposed to run pretty narrow. Now if your in the same boat (or maybe the exact opposite one depending on how you look at it) as me where even the widest lasts aren't wide enough, then I understand where u r coming from.
I wear a C in US size. I understand that my best best is the Simpson and Alcudia. The issue is that if I like a style that is made in the other lasts, then I may not have an optimal fit. I'm not saying its impossible to get a Carmina, just harder for me.