My personal canon is actually three separate personal canons.
Canon 1: Star Wars, by itself (original theatrical, of course). This allows for things like Luke and Leia not being related, Vader not being Luke’s father, etc. I like this idea simply because it allows me to enjoy Star Wars as a standalone film with its own separate story. Whereas Empire and Return were explicitly as sequels, Star Wars was its own, independent movie.
Canon 2: The original trilogy in its unaltered state. I consider this trilogy to be its “own thing” in that I consider it to be a story that does and should exist separately from everything else.
Canon 3: The original trilogy in its unaltered state, plus any new Disney movies that might come out. I justify not including the Special Editions/prequels by assuming that the people working on the new movies have a love for the originals similar my own love, so their head canon probably involves the unaltered originals and not the Special Editions.