Jugg DPS here.
Vengence Spec. So i must be the 1% that exists. Can honestly say their DPS seems on Par to the others. According to one of our guildies battle log anyway. I have a Marauarder in my guild, now we are both full rakata/black hole comms etc and i out dps him as vengence spec.
Vengence your looking at more DOT and buffs to your melee attacks. (Shien Form)
Wait to you hit 50 you might enjoy it more. Your level 18 you will have 1 companion? Yet you comment your sniper was good at 20. Maybe wait till you get next comp in who is a healer then you might survive more.