Empire for FU, Republic for non-FU.
I find the Jedi code TOOO restrictive (both for RP reasons, and if I was ACTUALLY a FU) so I'll be rocking the Sith, but for non-force users I like the sound of the Republic classes more, so I'm thinking my first 4 chars will be a Sith Inq, then a smuggler, then a SW, then a trooper