How important is it?
Mages got 80 to all resis with mage armor on iirc?
Paladins got 130.
I see many priests going for 130. But how important is this, as it's basically only good against paladins?
AND
Is spell pene than every other stat until you got it capped (for example, 27 sp vs 35 spell pene, whats better)?