Traveller 5
In reply to TippedVelvet (msg # 11):
As someone unfamiliar with the system, you might be better off looking for a more gentle entry-point into the realm of Traveller. The first and second editions of Mongoose Traveller are very accessible to the beginner. I have plans to start up a new second edition game sometime within the next couple of months, but obviously that's no help right now (I'm still fiddling around with the High Guard supplement, which will feature prominently in the early part of the campaign).
I find Traveller5 to be slightly unhinged. I love extremely-crunchy systems with sprawling, detailed rulesets, and I love Traveller, but Traveller5 is what I would call desperately neurotic. It's probably a little too far up its own rear end even for me - and I assure you that is saying something.