Alien Resurrection was the best.
Okay I'll start by saying I'm glad you liked it.
Having said that... did I just logon to Crazyland?

:lol
(Kidding.)
For me- I've been a fan of the franchise since I was 9 years old in '79, when someone brought a photostory book of "ALIEN" to school. I didn't get to actually watch "ALIEN" until it was on tv in the early 80s, where it scared the ever-loving crap out of me! The scene of Dallas in the airduct is pure horror gold with no blood and gore whatsoever!
My favourites are the first two films with either one taking the top spot depending on my mood. "ALIEN" is a horror film while "Aliens" is an action film.
To me the third film completes a trilogy of Ripley dealing with the Xenomorphs, ultimately resulting in her death. The workprint version is far superior to the theatrical version, but I won't deny both films suffer with the theatrical version being a complete mess. However knowing what Fincher went through to complete Alien3, I can appreciate the film for what it is worth.
Sigourney Weaver agreed to make Alien3 on one of a few conditions that Ripley be killed off putting an end once and for all to her starring in these films.
However she did a 180 and made Alien Resurrection... so I guess money does talk. :lol
Personally I thought that A:Res was the weakest of the films. It turned Ripley into an anti-hero character with superpowers. Cool/fun to watch, but removes a lot of the dramatic element from the film. It was no longer a horror film... I really don't know what to call it other than a Chronicles of Riddick style film.
And the aliens themselves are pushed as far away as possible from the biomechanical beings (weapons?) they first were. Now they are mammals? :wacko
Don't get me started on the AvP films- they went the way of "Frankenstein meets the Wolfman." :lol
Kevin