Battle Healer or Selfless Healer? Personalty, I'm a fan of Sacred Shield, only because I like to be as hands off as possible and I can simply macro SS into my priority without consequence. Selfless Healer was just a total whore when I tried to macro it because FoL has a cast time, which means it was resetting my swing timer anytime it tried to cast without the full stack. It also wasn't canceling the cast reliably if it wasn't instant, which was killing my mana.

Of course, if you don't mind managing your heals then you might have better luck with SH. But if you're looking for more passive stuff, I'd highly recommend SS and then look to 90 for a slew of Holy Prisms to keep you up.

And finally, here's your grain of salt since I run with a lot of passive healing and a full time healer, so I might not have a frickin' clue