Wow, thank you guys. =)
That's really some useful stuff you put down there and making a decision definitely feels a lot better now compared to just going with my guts.
Bringing up style - not only style of play but also visuals, moves, etc. - is an interesting point as well. As long as it's viable of course. I'm kind of inclined to go for Guardian atm because of the iconic feel with single saber, push, leap, etc. On the other hand healing reduction does sound enticing... I hate I when I get my kills denied.