Re: Vengencedin?
As the builds no doubt tell you, there are variations on the theme.
E.g. 1 Vengeance and putting those points in Resist X or Salvation, to keep mana cost down. Or only maxing one Resist but also maxing Holy Shield for more defence.
Edit: of course, you lose tha AR bonus (assuming this one isn't also buggeed), and the damage per level is 8% ED less.
On the other hand, you get the passive max res bonus from the Resist X auras.