I'm binging the Alien movies. I think if I had to rank the ones I've seen it would look something like this:

8. AVP:R
7. AVP
6. Alien Resurrection
5. Alien: Covenant
4. Alien 3
3. Prometheus
2. Alien
1. Aliens

I haven't seen seen Romulus yet. Alien 3 is a tough one. I like the Assembly Cut, that's probably enough to give it the edge over Covenant, otherwise I might flip the two. 

 pretty solid choices