Astrologian. It gets a lot of flak, but I think the end result became my favorite healer. I've leveled all magic classes to 60, and of all the current healers, White Mage, and Scholar just don't feel as right as Astrologian does for me. Diurnal stance lets me cast regens that a white mage can't, and time dilation can make a chosen party member immortal-like. There's also the high healing Nocturnal stance, which has amazing defense shields. It gets even better if you manage to draw a bole card. I love this class, and I am likely to use it as my main, though Red Mage is reminding me a lot of it, and just might be my alt in 4.0. Tldr: Id probably had quit the game if not for Astrologian.