Very few things are going to spike you with elemental attacks in PvE so Wanderer's is kind of a waste. Full ascetics is really the best choice there.
For PvP it varies. The classic combo is Judges' Chest and Legs with Ascetic's Hands and Feet. Acolyte's Armor is great for boon prots who are 99% of the time under an enchantment and Shepherd's is good for Infuse Health.