I have large, flat, duck feet. The sizes between the styles vary dramatically. Like in a ridiculous way. I take 40 in mens komodos, but, like, a 37 when I tried on the womens seeyas (normally I take a 42 or 44 in womens).
Just try to find the style that works best for you. You will know it's "the one" when it fits like skin (you won't even feel it there)