Sorc is really easy to level once you get the 2nd companion (a ranged dps). Things are usually dead before they get thru your shields. Merc is easy too - usually open with death from above... and tracer missile whatever that is left... Operative - no, not really. leveling operative is awkward, because abilities have long cooldown, not spammable. it makes the class difficulty to master, and when you do, you learn a new ability that changes your entire rotation. and, seriously, why would want to be an operative heal when the class is less fun, less healing output, less concerned by BioWare?