I started reading Fire and Stone recently. I have to say that I was blown away by Aliens and Prometheus, I really think these nailed the film atmosphere.
AvP (ironically) not so much. The predators just aren't doing it for me in these issues... maybe because I can't really ascertain any characterisation, they're just predators going around killing stuff as usual.
However, I've not finished yet, so maybe things will turn around (I've to to the bit where Galgo is giving his captor some grief whilst suspended).
But the first two books were great, I absolutely loved them - and am looking forward to a re-read.
Once done with the comics, I'm going on to the new Aliens novel trilogy (are these connected with the comics - this is a lengthy thread and I've not yet read it, I've been avoiding novel and Fire and Stone threads till I've read them is all).