I mained holy and disc this expansion and playing shadow from time to time, but only in PVE. I would like to go to PVP, mainly rbgs and some arenas (never liked arenas a lot). I also have a fresh lock at 110 with weak gear, but my priest gear is also PVE, so from a PVP standpoint, it's also weak. My question is, what should I play? What is the most fun, most 'balanced' class and spec of these for rbg's and arenas? I remember having fun in both arenas and bg's as afflock. Are locks still very difficult to play in arenas? I assume if so, SPs are also not much different. I guess holy is non-existant in PVP too.
tl;dr: Holy/Disc priest main, warlock alt, looking to go PVP, what should I play (of all available specs for both classes)?