So I've been researching the classes and thinking of rerolling to a firebug bounty hunter. I like the idea of a dot based fire class so firebug looks good to me, however as a shared tree I have a problem in deciding which would be the better advanced advanced class to use with PvE in mind (I never really PvP). My assumption would be Merc since 2 blasters instead of a shield should mean the shot attacks do more damage, but at the same time looking at the talent calculator the other trees in powertech seem to the better talents for improving fire damage in particular.
Help from players more knowledgable of the class would be appreciated.