StingingVelvet: I love my sniper's storyline but having played a sith inquisitor for almost twenty levels now I have to say her combat is exceedingly more fun. I even spec'd as a healer but still have a glorious time running in and flinging enemies everywhere, then following up with lightning and saber swipes.
Story is a little disappointing though.
Yeah I consider the agent to have the best story in the game while SI is the worst or the closest to being the worst. Sith warrior is much better than the SI in my opinion story wise.
BTW as a healer if you have a bit of patience you should be able to solo the Heroic 2s.