I did too. Both are bad films, but A3 is just an extended rock video with possibly the worst ending of any film of the last thirty years. The molten lead was fun (even if it alluded to a historically inaccurate idea), but the final plunge had half the cinema I was watching it in (at the original release) laughing out loud it was so stupid. Add an alien which is bigger than the dog it just popped out of, the idea that group of psychopathic criminals would turn into monks and the casual killing of all but one of the previous survivors (presumably because they'd read the script and didn't want to get involved) and the film is laughably bad. A4 is certainly very silly (the two main "scientific" ideas are way past impossible and into pseudo-science), but at least it had a sense that the director knew what he was doing.
M
Well Alien 3 is a favorite movie of mine, it is vastly underrated and you should know that Fincher knew exactly what he was doing, Weaver just wouldn't leave him to make the film he wanted, if she had done so, Alien 3 would more than likely be a modern sci-fi classic, just take a look at Finchers better movies (Seven, Fight Club, Zodiac). Granted it suffered from some bad effects with regards to the alien but there are some very good themes throughout and it takes repeated viewings to really "get it". I'm not saying you didn't get it, i'm talking generally because at first, I thought it was pretty awful but it grew on me the more times I watched it. The performance by Charles Dutton is excellent, as is Charles Dance. If anything weaver is to blame for the failure of this movie, just google a few articles about how she interfered on nearly every level of production, about how it had to be her way all the time or she would "walk". Fox are money hungry, will always go for the dollar over integrity and without weaver, there would be no dollar.
I could go on and on with why I think it's better, but i'll agree to disagree on this, i've been an ardent fan of the alien movies since I first got the life scared out of me at 7 years old, I know them inside out and upside down, was a real geek when I was younger and read all literature on them, maybe a bit too much looking back. Plus this is a terminator thread and i'll let it get back on topic.