Rule 1: Don't use chat-speak abbreviations like "atm" or "prio."
Rule 7: Make your own gear decisions.
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Hey with the new mastery change regarding mastery (Now effects all heals instead of only direct heals, i.e healing rain and earthliving). Atm I personally prefer to use the Halfus heroic head as a set breaker and using the tier chest for the 4 set, and also reforging all mastery/crit to haste just because haste is our best secondary stat. I now have the question weather it would be worth switching to the Tier head and getting the Omnomnomtron heroic chest. This gives for 1 gives more mastery (if its worth it with the change) and more spirit as the best set piece atm doesnt have spirit .
I feel that the new mastery change would be worth it in many cases. For example most fight mechanics people will drop low and will trigger earthliving (via the talent in deep resto) or just by using steady heals and chain heals keep earthliving on 5-10 targets. So to sum it up, since keeping up healing rain during intense aoe fights with a good amount of mastery and rolling earthliving on a good amount of people, is it worth it to have Haste and Mastery be on the same stat prio on gear and using the omnomtron HC chest as a set breaker.