I was a young teenager when I watched the first Alien film, it was a truly scary film, very cleaver with it, well acted and brilliantly directed. The second film, was in some ways better, but not as scary because once you have witnessed the chest exploding awesomeness its never the same afterwards and so it played on different strengths.
Prometheus for me was good, it could have been much better though and this was down to the editing of the film, they missed certain aspects out which should have been there or we're not explained efectively. What were the engineers running from, what killed them and stacked their bodies against a wall, why did they have big holes in them, what caused the life sign detector to activate at the end of the tunnel, was it the same thing that killed the engineers? Then there is the aliens, we have little worms that get bigger because of the life giving fluid, however if you drink it something else gets created and this is where I'm really confused, but in the end we got an Alien.....okay, what was the point of that, was it a bad batch of the black fluid that caused it all to go pear shaped or was it a weapon designed to ultimately create the alien which then killed all the engineers which would explain some.
What I did really like, Michael Fassbender, he played the logical and emotionless android brilliantly, the cinema-photography was beautiful, the concept of how life on our planet started was good and the operation scene was pretty gruesome but well played.
As for why the ship is more technological than the ship that came after in Alien, well one was a cargo ship, why would they need advanced state of the art equipment on a cargo ship, they wouldn't and the other was an exploration vessel where they really would.