Yea, the warlock forums can be pretty helpful. Also you might want to talk with caliban, or speakertown if they are on, imo two of the best warlocks on bl. As for your pet, the void is great while soloing due to his high health. I would only use the imp for when you have a tank in the group just to buff his hit points. Volls will prolly comment his lock is around 40.

Who Delivers ten times out of ten?