who is the best vampire in the twilight sagas

Of course, it's Jasper.

Depends how you look at it... Edward just doesn't feel the need to kill people as much as Jasper does, so, from that view, he is better xD
I could mention my other points of view, but nobody wants to spend half an hour reading that xD

i have an entire list of things:
1. i love him
2. i love his gift
3. i love him
4. i love his mystrious air
5. i <3 jasper

i actually love both but i luv edward the best