Perhaps its not my place, considering my guild isn't 7/7 yet.
But it seems to me the discussion of stats is really explained well in
Cataclysm PvE Holy Paladin Theorycrafting - Forums - World of Warcraft by Lylthe.
To put plainly for the off stats from Int and Spirit:
Haste (until hero cap) > Crit > Mastery
I understand utilizing extra haste for extra ticks of Holy Radiance, but after 1000 ish rating, I feel padding Crit to utilize the procs is the way to go. Specifically with the 2x heal up from 1.5x. This affects healing directly, and essentially adds double mastery.
In my opinion mastery itemization is so useless because of the crit mechanics and the ability to build it with extra haste that a spirit/ mastery piece is less valuable than a crit/haste piece.
These are radical statements because I have researched alot of the top paladins and they are haste stackers straight out. Why is this?
I personally try to maximize intellect, minimize mastery. Focusing on gaining max spirit and then haste until ~1064 (comfortable lag time reaction to GCD cap when hero is poped) and then crit.
I'd love feed back