What is your favorite type of alien?

I like the one from 'Alien' that Giger made, it looks amazing. 

For me there is only one true Alien/Morb...like Svanya said, it's Giger's original. It's chilling, menacing, frightening, bizarre, yet graceful and beautiful too! We also knew so little about it, not even knowing for sure, exactly what it was.

Sadly those mysterious and bizarre qualities have been lost in subsequent films. 

the drone alien from the first film

I really like the Drone and the Decon, but for some reason, the red Aliens were always my favorites! :)

Original Drone and Predalien.

Predalien

Big Chap, The Warriors (From ALIENS and AVP: ALIEN VS PREDATOR), The Queen and the Predalien.

The drones then the Praetorians

Praetorians and predaliens. (The Predalien from BG-386 to be exact.)

The creatures from the first three movies.

the dog alien would have to be my favorite. however when the old PC AVP game came out i liked the predalien. as for the design of the original alien, i would say i like JC's ALIENS alien the most.