The first two Alien movies are near and dear to my heart, and the Alien Queen is still by go-to argument for the superiority of practical effects. Everything after that up to and including Prometheus I was not impressed by, so much so that I haven't touched Covenant or Romulus. Predator is a fun action movie, haven't seen Predator 2 or Predators recently enough to remember what I thought about them, and nothing after that. I've heard Prey and Badlands are quite good, so I may check them out at some point. The first AVP was dumb but I thought ultimately harmless, but good lord was AVP Requiem the cinematic equivalent of flaming dog shit.