I am considering starting a new group consisting of 4 Warlocks and a shadow priest, In my estimations this would be a pretty unstopabble PvP group, whilst not having quite the "clout" of a 4xMage and Priest group, it certainly has much more survivability, and over time, a greater DPS total as well. My question is, what do you think would be the best spec for the Warlocks? All four Heavy affliction, Demonology, or a slight Mixture?