Modern day films may have better graphics, and camera effects (aswell as costumes of monsters & other effects).
But no movie today can compare with such a well put-together story, From Alien, to this and Alien 3.
Exclude Alien Ressurection though, it should have never been made.
Sheeee didn\\\'t wake up on Earth. I\\\'m sure was mentioned, but I didn\\\'t go through all the comments. That needs to be edited. She woke up on a Space Station :S. Ripley doesn\\\'t go to Earth until Resurrection, which technically isn\\\'t even her...
Why this movie is better
I don't know if it's safe to say it was -better-, but it was for certain better than any movie out in the same genre, even by today. It offered a very in depth look surpassing the enigma we knew in Alien. Sadly, this was part of the charm of the Xenomorph. We knew nothing of it, which raised the terror it wrought upon us. Then it was a creature of hell and shadows.
Now the Xenomorph, though perhaps more menacing, is much less enigmatic (though still shrouded by what we only know of human to Xenomorph encounter) and more based on it's cunning and strength. We came frighteningly close to personifying them when it came to 'Grid' in AvP. It was interesting to see Alien to Alien interaction in some of the scenes, but at the same time it was a little scary to see how close we came to stripping the Xenomorphs of their visceral prowess regarding their Hive Mind. But I digress...
Aliens was a trade off. It was action, it was intense, it showed a new side to the Xenomorph strength... their numbers. I was however extremely saddened that it took an entire Hive to kill but a handful of humans, trained Marines or not. As you can tell, I'm a Xenomorph loyalist. Down with Marines and Predators!