First, you dont need to gem fully for sp ;P
Currently, without any buffs then my own im at 2041 sp in tree, 1200 spir, 1089/354 mp5, 571 haste. And there currently isnt any fight other then instructor raz that I havent ended up with most healing done. (Try beating a pally with really good gear, with beacon on the adds, in that fight)
And since this topic is about sapp, then most of the time I do end up with most healing done and most decurses done. And lately Ive done that, WITH frost resist gear. Since that allows me to stand still in the middle to be in decurse range of everyone and throw how and not move away from blizz. With the FR gear that allows me to do the same in 25-man aswell, even with 2x blizzard in my face.
If anyone is interrested, http://eu.wowarmory.com/character-sh...eppes&n=Xerxes