Of course I'd choose neither.
But because that's not an option here, even if some people think it is, I'm going to have to go with Twilight. Sure, twilight is horrible, but you can laugh at it, because it's so bad while still taking itself to seriusly. Vampire's Suck is awful and they're not taking themselves seriously. That's like a bad comedian relying only on jokes about Justin Beiber, because that's what's "hip".