I am one of the guild's hopeless alt-o-holics and I have tons of toons so I'll try and narrow it down.
I started with my gunslinger as my main for many of the same reasons. Bold, brash, the rogue with a heart of gold. Plus, quick draw dual blaster pistols was just too much to say no to.
However, after playing my Jedi Knight Guardian, it is just too much fun to dive straight into a fight and kick ass six ways from Saturday. I like my gunslinger's RP perspecive better but my Knight wins out in all other ways.