AvP = Alien vs Predator. Im watching AvP requiem right now which is the 2nd in the series of AvP films. Which do you think is more well known and which series do you prefer?
This isn't really an opinion thing... Alien is more famous as a film. Predator is more famous for one-liners. AvP is more famous for fans of Alien and Predator hating it.
I didn't know about Alien or Predator until a few years ago, but I always heard about AvP back in the early 2000s. Many of Arnold's best one-liners are from Predator though.