Which horror is scarier?

[Shaka_Khan]

We have seen blockbusters on these monsters recently.
Which would be the situation that you would want to avoid the most: chest bursting, changing to a zombie, changing to a vampire, changing to a werewolf, or having your spine pulled out?

If these monsters go face to face, I would bet on the predator. The predator does not have to go near anyone to kill. The vampire might have the best chance to escape thanks to its ability to fly. The alien comes close to being the best because I think the alien's acidic blood makes it immune to whatever the zombie, the vampire, and the werewolf has in their blood.

So which one makes a better horror movie?