Am I allowed to like both Aliens and AVP:R? I do. Honestly I think every movie in the franchise has something to offer.
Alien - masterpiece
Aliens - masterpiece
Alien 3 - amazing atmosphere
Alien: Resurrection - amazing art direction
Prometheus - introduction to new and interesting lore
Alien: Covenant - best story in the series imo
AVP - good pacing, nice sets, best predator mask ( celtic )
AVP:R - awesome predator, grotesque death scenes
Predator - masterpiece
Predator 2 - brutal sequel
Predators - interesting new lore
The Predator - funniest movie in the franchise by far
I guess I'm a fanboy. I like all the movies from both franchises for a variety of different reasons. I admit the quality of a couple of them are iffy ( AVP:R and The Predator ), but there is something good about all of these movies imo. I wouldn't be opposed to rebooting the AVP series entirely though. I'm kind of hoping The Predator is ignored going forward too. It was just too ridiculous for my taste lore wise, but I can see why people could like each movie.