ShamWOW for a Shaman, hands down. The stock singular profile is pretty good at healing for Druid/Holy Paladin, though some minor tweaks to the spell settings make it significantly more effective. The nice thing about Singular is it still attacks as a healer when nobody needs any heals, something not all profiles seem to do. Really annoying to watch your healer just stand still taking a beating and healing itself when it drops to a certain point, never hitting back.