I'm just leveling up my priest and am planning to roll spriest/frost mage for two's but disc+two others for three's. I'm wondering, looking at the stats on the healing pvp set and the four piece bonus, if it would be better to get just that set so I can use it for both my shadow spec and my healing spec. On the other hand I'm also wondering if just going double two piece bonus would be better for more resiliance. Opinions/suggestions?