Love locks, my first character was a lock, I've independently raided on mine at several points over the years. Never had more than one at max level, though.


My aff lock was good for PVE bosses (at 90) with the following macro

/stopmacro [channeling]
/castsequence reset=15/target Agony,Corruption,Unstable Affliction,Haunt,Malefic Grasp,Malefic Grasp,Unstable Affliction,Corruption,Agony,Haunt, Malefic Grasp,Fel Flame,Malefic Grasp, Malefic Grasp, Life Tap

Reforge for mostly haste, if you have enough haste you can risk adding another malefic grasp but probably not worth the risk of dots falling off.

That was several months ago, so use at your own risk. I would say that her single target dps was great, but her aoe was terrible. Which isn't a problem in heroics, just an inconvenience and a tedium.