WHO WOULD MAKE THE BEST ANIME VAMPIRE COUPLES, YOU CAN CHOOSE ANY VAMPIRE FROM ANY ANIME AND PAIR THEM WITH ANY VAMPIRE FROM ANY OTHER ANIME!
-MAKE IT YAOI OR MAKE IT YURI
--MAKE IT SEXY, MAKE IT SWEET. LET ME HEAR YA!

Okay, on a less capitalized note, in my personal opinion i think the couples of Ren from Karin Chibi-Vampire and the transformed Moka from Rosario+Vampire would make a pretty good couple.