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By the way, I stumbled upon this last night and it seems to be a pretty nice, free open source alternative to X3 (or Freelancer).
http://vegastrike.sourceforge.net/

The problem is the learning curve.

I liked Freelancer for telling a story which introduced you to the game mechanisms one by one and then throw you into the universe after they made sure you could...

If you want to change your pace a bit and live though a movie like experience, get Freespace 2. It's ten years old, but thanks to a public source code it gets lots of graphics updates.

Battlestar...