I know this topic is old, but if I had to choose vamps from Twilight, I'd have to go with Carlisle, Peter Facinelli in general is just one gorgeous Italian. I actually find his portrayal of Coop in Nurse Jackie hilarious too, and I'd want a boyfriend who's kind of goofy the way he is, in his innocent sort of fashion. The narcissistic part, not so much.
Now True Blood, I'd have to say Eric Northman all the way because Alexander Skarsgard is just a GOD sent from the Swedes. Even his father Stellan still looks good in his age.
-Proud owner of a vamp- ^_^