Predators for me simply because:
I grew up looking up to these guys as heroes.
These guys are physically strong and fast.
Thy're my heroes too, i was a fan before I even saw the design at all I loved it from a writeup at the end of fangoria magazine maybe may/june ussue 87 said something like we have news of new film with arnold shwarzenegegr in a film from a story called hunter. aboiut a bunch of soldiers stalked by an extertesstrial hunter. it was love at first read.
Back to the vot, I didnt vote for either beacause I love them bothy as different movie characters that are freaking awesome !! I love em bot th but I have different love for Predators, scary or not id sooner clash with a predator than an Alien ANY DAY! omg fkn death that lasts a few seconds of agony vs how long does it take for you do die from a chestburster??? haha def no thinking about that one lol!
PS you scould put a third option of both??? Id have voted that!