I love this macro, it makes healing so much easier. As you said, if your taking it easy on the spam button, you can manage mana very well.
I was curious if there is an AoE version, or if there is some tweeking you suggest for an AoE? Currently I am relying on RM spreading to other players or EF or Rivival. I am a newb at this, so if I am not being efficient at this, that is why.
Also, this macro works well for dungeon healing, how does it hold up with raid healing? I have not heard anyone comment on that in this thread. I am going to start raiding soon on this toon and was curious.