Started playing as commando heals in the beginning, got nerfed hard in update 1.2, thought I'll be alright, devs will fix this.
Gave up on commando in 1.4 - devs clearly had no idea what they were doing. Haven't touch it for a year, did /played last night - 51 days (that's a lot for one toon you haven't touched for over a year).
Go sorc - more star warsy and chances are because of that they'll be in a better spot throughout SWTOR's game life.