Normally I'd vote BH, b/c I have one, but my best friend and I just were in Vegas and she purchased a Neverfull PM, and I have to say, its pretty darn cute. I tried on the MM. The inside is adorable.
the only thing I have against it, is that it has thin straps, other than that, I'd say the BH and the Neverfull MM are comparable.
If I HAD to choose, I'd say BH. - that probably didn't help haha. but I think either one you choose, you're going to love. (just get both

)