I enjoy the first half of Resurrection, the second half not so much.
The first Alien movie is still my favourite, much prefer the single threat. If I had to rank them it would probably go:
Alien
Aliens
Alien 3
Alien Romulus (might have been higher but I find the fan service distracting to the point it started to ruin the movie for me)
Prometheus
Alien Resurrection
Alien Covenant
Yeah, I'm the same. I used to rate the first film very highly but after you know what it is they are dealing with, the film loses a lot of its appeal and I just end up feeling bored every time I've watched it again.
The only issue I have with Resurrection is the design of the alien at the end. Other than that, I find it quite enjoyable and I love the banter between all the crew members. Ron Pearlman really hams it up and shines in this movie.
I enjoyed it more than 3 and 1. Although I didn't like the first film because I had friends that told me every single detail about it before I saw it, so I couldn't get into it knowing so much about it.
I also have a soft spot for Resurrection because the crew in it is made up of prototype Firefly characters.