So, which one? I'm having a hard time deciding if 5% increased stats (minus intellect of course) is better than 2.5% max mana return on EFFICIENT healing in terms of PvP.
Enlightenment by far for PvP. On top of the extra health you get haste. Just that fraction can sometimes make the difference between getting off a FH and having your partner die. Besides, the current speed of arena fights Rapture is near useless. Either you're dead in 10 seconds or you win.
Huh. You know, I had actually never even noticed that. Now I see though. I guess for the same reasons Twin Disciplines affects Mind Flay. Channeled spells are considered to be instant cast.
I still think Enlightenment would be better for PvP than Rapture simply because of the current speed of arena matches.