First I wanted all three at 80, but then this article changed the way I view Holy Nova:
http://www.plusheal.com/viewtopic.ph...st=0&sk=t&sd=a
This shows that with Glyph (and especially in combination with Mental Agility), Holy Nova has both more mana efficiency & more healing per second then PoH & CoH (plus its instant cast of course)
So I’m kinda stuck with a dilemma now...