I Love them both. Some of the most iconic monsters in cinema history. But, I think predator for me. They're just so supremely cool!! What's more bad ass than an Alien who hunts other aliens through out the stars. They've got amazing tech, can cloak and look incredible. Plus, I feel like the juxtaposition of tribal brutality and super advanced technology in its own right seems so Alien! It's such a mystery why they hunt, what's the need!? Is it physical? Religious? There is so much you can do with this character! Team Pred!