Originally Posted by
econ21
Use both.
Use the dps one where you need the dps (e.g. your raid is not making the enrage). The proc is an AOE one, so it's nice for soloing and trash. It often seems to be about 5% of my dps.
Use the tank one where you need survivability. The tank one has a powerful "cheat death" proc which can save a wipe if you make an otherwise fatal mistake, like fail an interrupt. Of course, you will need quick healing after and it won't proc if the overkill is more than your max health.
Generally speaking, I would use the tank one on progression and the dps one in less challenging content.