Sorry, I'm not good at english. I hope you still understand me =P

There are special editions/Director's cuts of all Alien-movies now, right? Could you guys help me. I haven't seen the movies by myself yet, so what version of each film should I watch? I know that at least the directors cut of Alien is really weird, but how about the other ones? And should I even watch Resurrection, I have heard that it sucks?

Thanks! =)