Easily the most quotable and most fun entry in the saga, while also keeping in tone with the aesthetics and horror of the first. I love this film.
As far as the Aliens being likened too much to insects, to me they feel just like the same Aliens as the first. It's just that we see them here in a different situation. Also, the film isn't presented as much in a brooding creepy fashion like the OG, but the Aliens behaviour is still in line with what the first film brought to the table, with how they use surprise attacks and out-smart their victims, etc.
I flip flop a lot on what my favourite film is, but honestly I think both Alien and Aliens are 10/10. Both of these are Oscar calibre movies.