I'll start off with the 3 major healing classes and their greatest heals
DRUID - Heals a friendly target for 2234 to 2494 and another 2345 over 21 sec.
1040 Mana, 40 yd range, 2 sec cast
PRIEST - Greater Heal
Rank 9 78 A slow casting spell that heals a single target for 3950 to 4590.
1290 Mana, 40 yd range, 3 sec cast
PALA - Holy Light
Rank 13 80 Heals a friendly target for 4888 to 5444.
1880 Mana, 40 yd range, 2.5 sec cast
Indeed the paladin spell is the most powerful burst heal , but the mana cost is simply way out of the page . An average 70 paladin has around..10k mana lets say . he can dish about 12 heals , not taking into account crits .
A level 80 paladin , we can safely suppose his average mana pool is 15k ?(although i realy doubt such a great increase) . This leaves room for...um .. 8 heals !
Although healing output is not really comparable , efficiency drops by 30% + .
I find it a very expensive spell that does little over twice the level 70 max holy light for 400 mana more then 2 max level 70 holy lights ! Hell , the aoe spell becomes quite decent in cost now O_O
I find the priest mana cost more reasonable , atleast it should be close to it .
Is it just me that finds the mana cost too big ?