[Edit: these were for the 3.3 patch of Warcraft. For my cataclysm pawn scales go here.]
Do you Agonize over which piece of gear to equip? Let the Pawn addon decide for you!
( Pawn: v1: "Healer": Intellect=1, CritRating=1, HasteRating=1, SpellPower=1, Mp5=1, Spirit=1 )
If you are healing and not dpsing, then just remove the HitRating.
And for those of you soloing, we add in some stamina:
( Pawn: v1: "Healer (Solo)": Intellect=1, HitRating=1, CritRating=1, Mp5=1, HasteRating=1, SpellPower=1, Spirit=1, Stamina=1 )
Btw, HOOM stands for “Healing until Out Of Mana”.
For testing, I use the DrDamage addon to guesstimate total healing done until out of mana.
On my 72 Discipline Priest, using a wide variety of gear (50 pieces total, with good gear from Spirit, Spirit+Int, Int, MP5, and SpellPower) to fill the 17 slots on my character gave these results for Flash of Light (Rank 9)..
With the highest Item Level gear (gearscore of 1732):
807 Healing, 14.61 crit, 36 haste, 257/148 mana regen.
DrDamage estimates 83k HOOM.
With just +Healing gear:
972 Healing, 14.28 crit, 36 haste, 182/98 mana regen.
DrDamage estimates 71k HOOM.
With just MP5 gear:
525 Healing, 9.76 crit, 15 haste, 431/255 mana regen.
DrDamage estimates 62k HOOM.
And now, with my special pawn scale!
874 Healing, 16.55 crit, 36 haste, 285/157 mana regen.
DrDamage estimates 87k HOOM.
A whopping estimated 16k more healing! With decent mana regen too! Of course, as with all situations (different tanks, different instances), it depends if you will need stronger healing, or longer-lasting healing. But this setup should scale as you level as long as you keep upgrading your gear.
If you see similar results, please let me know..