I have a Priest and Mage and I enjoy playing both but ultimately I plan to PvP. I like that priest has the utility of healing/DPSing but Mage just has some spells that make it a really enjoyable class. At any rate, I'm struggling deciding which I should continue for end game PvP. I will be doing some PvE as well, but I love PvP so it's what I'm more concerned about. I'm aware that I may be expected to heal etc. as Priest, but I know there will be opportunities for DPS as well. At how, which should I plan on going for end game? Also, keeping in mind Cataclysm, which seems the most promising for enjoyment in the future?