It really does depend on the spec you choose.
Kinetic = tank, close combat with 4 - 10 m range, great survivability
Infiltration = DPS, close combat w 4 - 10 m range, bursty glass cannon
Balance = DPS, range/close combat hyrid w 4 - 30 m range, Sustained DPS, glasscannon
All have great utility and are fun to poke around with. Proc-based damage on all of them and lots of clickety-click on buttons