Need a new RPG ...any advice?

[Jaxilon]

Space is why I originally got Gurps myself but then I didn't have the time to generate all the planets I wanted. I keep thinking one day I'll get around to it. Haha! What I ended up with is a sci-fi fantasy world my group plays. Like, once or twice a year

I had thought about getting the traveler source books for Gurps myself but wasn't sure if I would like them.

I like the idea of being able to use the same system for any genre so I tend to stick with Gurps. Maybe if I played a lot more often I might put more time into checking out some of the others.

[Krazma]

For the Fantasy genre, I'd recommend Hârn. It can be played with any system, but it does have a customized system that works quite well. No levels, no hit points. Fairly gritty feel.
http://www.columbiagames.com/harn/
Plus, there's a ton of free stuff available for it at http://www.lythia.com/ (including one of my own: http://www.lythia.com/2010/02/bognors-folly/).

For the superhero genre, it's hard to go wrong with Champions/HERO system, IMO, but I guess that may depend a lot on the specific likes/dislikes of your group.