There was some discussion about this a few pages back, specifically between me and @Watchman1
I think I have learned (being an AE 3E and an Alden E or EE), that the standard Detroit last would not fit me. According to Watchman, Detroit is about 1/4 inch wider than Rain. Since I couldn't get my foot into any Rain last shoe (I mean, the ball of my foot wouldn't even insert), I will more likely need extra room in Detroit.
Having said all this, I've been meaning to start an MTO thread for a wide chukka, either Rain or Detroit, or the EG Shanklin, in order to get one made without incurring expensive MTO fees, but I just haven't gotten around to it yet. Maybe I'll get it done tonight. Stay tuned.
Carmina last are certainly hard to fit in their standard width if you have a wide foot.
The next Carmina I own will indeed be a wide width special MTO.