Please recommend me a good SCI-FI to watch/read

Just got into the scene, but I'm having a hard time finding some quality series. Some of the series end after one or two seasons, or the quality of the content is just absurd.

I finished watching Stargate Universe yesterday on Netflix but haven't got into SG1 or SGA because they're not featured there currently. I think I've watched all the Star Trek movies and have read pretty much all Endergame books in High School. I don't know what it is, but I'm kinda obsessed with it all. I actually was really pissed how SGU ended because I felt like I wanted to see more.

Anyway, I just started watching Outcasts even though it's 8 episodes. If you guys have any suggestions please leave them here. Someone earlier recommended me to watch Firefly/Serenity. At this rate I think I'm going through series, I might just start get back into reading books too.