Originally Posted by
Diabolical
Mana costs nearly doubled from lev80 to 81, because there was a large spike of base mana. This has continued through all the levels (and probably until lev85). Before base mana was 3.5k-4k, and this is what spells cost a % of, but since they boosted the base increase per level, its really throwing costs for a loop.
But as for Disc, I'm not entirely sure if my toon is in a bugged state, or whether thats standard, but my Flash heals are hitting for around 10k (4730 self buffed Spellpower), and Gheal right at aroudn 11-12k. I broke the math down with the Glyph for reduce Flash heal cost, and Flash heal was almost identical in Healing:Mana Cost ratio, So I've just been sticking with that (faster Grace stacks when repeat heals, more crit hits, ect).
But yea, Mana is retarded at this stage, even in near full 277 ICCHM gear, I can barely keep up through most of the trash packs (tanks are STILL reluctant to CC, and no one even knows what an interrupt is..). Oddly enough, trash seems harder on mana for me, than the bosses themselves (MOST of the bosses, I at least have the opportunity to use Evang/Archangel, since its bugged atm, in not consuming the stack, and some of the slower pace bosses, I end the fight at max mana... :P).
As for Holy, I'd probably drop the lightwell somewhere close to whichever group has the most people (melee or ranged, preferably ranged for yourself), and tell them up front, that if they aren't below 25% hp, they won't get a heal from you, if theres a Lightwell down :P (Sad... but they'll learn the hard way if they have to). Holy could probably just barely reach Archangel (Recommended), and taking that with a Surge of Light spec (For Insta-Smite's to refresh the stack, which would be a lot easier than a cast...).