I voted for Aliens. I love the first film also it was a great introduction to the series and also the scariest out of all of the films.
The second though i feel topped it with the marines going back to the planet to fight the hordes of Aliens.
The third i feel wasn't as bad as people say it is. The dog created another twist by creating a new Alien. The ending was also a great close for the series.
Then the fourth came. It was such a rip-off i feel. It felt to me like "Let's try to make some more money with the Aliens series".
It should've been a trilogy i think.
