For serious raiding (ie not onyxia) I've been using Libram of Defiance but my avoidances are pretty good, even with Chill - armory below. In light of this, I started using Libram of Valiance for threat, because when tanking multiple mobs it has an almost constant uptime. Any thoughts on using this for progression raiding? I'm always looking to up my TPS.
http://www.wowarmory.com/character-s...usher&n=Malign