I suppose it is a matter of whether you prefer vampires or werewolves. Personally, werewolves seem a little less scary to me. Once you are bitten by one you become one, but at least they don’t kill you. What would be the point? A vampire, on the other hand, kills you by sucking all of your blood.
Honestly I don't truthfully understand the concept of wanting to marry a vampire when in past media vampires were supposedly scary. But if I had to choose I would choose Jacob because being a werewolf seems like a better option since they are not blood cold and and they can serve to be a sense of warmth when needed.
Team Edward all the way! Why? Because he is my brand of heroin haha. But jokes aside I choose Edward because although he seems smart he has dumb side as well. And what I mean by dumb side is that he leaves Bella thinking that she will be safer but in trying to protect her he ends up hurting both of them. It makes him seem more human.