havnt bothered reading most of everyones posts, as they just seem to be either showing off or making out they are the greatest with nothing to back it up.
So, HL spam build is incredably gear dependant. It relies massivly on your mana pool being very large (and therefore divine plea will regenerate more mana).
Gems: Int, Int, Int and some more int
Enchants: Int, Int, Int and a little more int
This seems excessive but im still not quite able to pure HL and keep beacon up and im sitting on 37.2K mana in raid.
As for specs i use spec 1 on my profile
http://eu.wowarmory.com/character-sh...sus&n=Dahlvash
To make the most of this spec you need to keep track of divine plea and Divine Illumination.
Dont be affraid to use divine plea, yes it fookes your healing but you will still be doing 12K+ heals, assuming you have the gear to use the spec.
For heroic modes, holy light is simply a must, you just wont get anywhere with flash of light. But for normal modes FoL should be fine.