Basically, I liked both the Serenity/Firefly and the Star Wars universes because they are both kind of dirty and broken down with some pockets of decadence and wealth. Our own world sort of writ large. For the opposite sort of reason, I like Star Trek, because it is more aspirational to where we might get to. I eliminated Serenity basically for two reasons, first, it borrows to much from the Western genre to be my favorite "Space Fantasy" universe, and two, I enjoy the bigger and more epic feel of the Star Wars universe (personal taste). So it comes down to the classic battle, Star Wars vs. Star Trek. In the end, I go Star Wars because it just resonates a little better, it's more primal.