Did you ever see New Outer Limits: Rule of Law? It had the same cowboy sci-fi context like firefly and defiance, but I thought it was a lot better. Too bad it was just one episode. It was really well written.
I watched a lot of Twilight Zone but never saw to many Outer Limits, I vaguely remember it being pretty good though.
First OL wasn't very good. The revival was awesome. Even for being dated it still holds up pretty well. The scripts were more movie quality than episode quality.