I actually forgot that I saw the two Alien vs Predator movies. Some thoughts:
Alien vs Predator - I watched once. I was looking forward to it because I have the old Alien vs Predator graphic novel and thought it was pretty good but I read it when I was young. A few weeks or months ago, the movie was on TV and I put it on my list to re-watch to maybe own because I guess I forgot that Lance Henriksen is in it. I know he's in Alien 3 as well. But that was a surprise cameo. Plus, I kind of want to own another movie with Sanaa Lathan and I think this is the only action movie she's in. She was really good in a modern noir set in the Florida Keys called Out of Time.
Alien vs Predator 2 - Another one I only watched once. I remember many parts of the movie were really dark with the lighting for some reason. I wanted the movie to be good as I think a Eurasian actress from the 24 TV show is in it. But I thought the movie was terrible. I assumed it would be a true sequel to the first one but I don't think it was. I only remember the pool scene with a blonde actress and her sadly not surviving a hospital scene by getting thrown into a wall by the Predator's spear or the disc weapon.
As a side note, I would recommend Galaxy of Terror to those who haven't seen it. There are some wild scenes in the movie. I think I posted about it around here before. James Cameron worked on it and a few surprise actors are also in the movie. Some might say it's a bit rough. But it's a horror b movie and I think better than Alien 3, 4, Covenant, and both Alien vs Predator movies. But I think that Planet of the Vampires is better as well than that group of Alien movies.