Very versatile game with lots of tools to promote a Sci-Fi game from Opera types to Gritty. We've started some "Firefly"-esque characters and hope to continue with the campaign.
I and my players like the depth and development of characters during creation. It gives variety but control to the players. Love the Career Development that promotes player contributions and character strengths.
Combat works well and does not bog down. One can use Tactical Maps or Theater of the Mind. The non-combat was also well done and not just a series of skill rolls. There was some challenge and tension in some of the scenario.
In summary: a customizalbe and nicely done sci-fi game. Also, you could probably do a Fantasy Sci-fi cross-over (ie He-Man, Thundar, etc) with the tools contained.