I've had some fun with stacking Healer (see my poor, neglected handbook...) and Healer of Mishakel, to get auto-empowered, 2x Charisma to healing, with another +4/spell level on top of that from Magic of the Land and Augment Healing, and then additional kickers from Combat Medic, with mastery of day and night for auto-maximize as well.
All the little bonuses add up to significant healing - not enough if the game is super rocket tag with uberchargers every combat, but more than enough for your average campaign.