one of the reasons I get impatient with modern "vampire" stories is because I find the earlier, ugly predator versions of vampires to be a far more credible and interesting tale.
These new glamorous sparkly vampires just don't do it for me in terms of suspense.
I like both Louise. I agree with you that an ugly vampire makes the movie more visually frightening, but at the same time a "normal" looking vampire is, at least to me, more psychologically frightening, and because they look so human they could be walking among us and we'd never even know it until it's too late.
And I must admit, a very handsome vampire is very appealing to me as a gay man, especially if it has a homoerotic element to it, which seems to be the current fad in vampire movies these days.