I'm a bit torn on what 'canon' to accept myself; They all have their Pros/Cons and they're all really cool IMO. One canon that I've been working with or thinking about a lot are the more recent materials via games and their supplementary materials that are more in line with Cameron's visions and ideas
Namely - Aliens: Colonial Marines, FireTeam Elite, AVP: The Hunt Begins (mostly in terms of 'castes' or Xenomorph phenotypes) along with the other films, the Weyland Yutani Report, and the RPG books to help 'smooth over' other stuff and help 'connect the dots' as much as possible while still allowing some freedom for extrapolation or personal ideas/thoughts; For example, I'm a bit partial to the idea that Xenomorphs are indeed a 'natural' species, or at least had some progenitor like them, and I'll admit I'm a sucker for the phenotypic diversity or nomenclature/dynamics presented in the aforementioned materials (allows for diversity or unique designs without going full 'Kenner' per-say)