Portalbarb

what about the bonemancer and the zerker ?

How do you manage to kill high lightning resistance heralds on Nova sorc when your merc keeps dying? Do you skip those?

I can't say its the best one and the fastets one but I got my sunder with blizz sorc and thanks to the teleport I was able to kite every single herald and kill it from the distance.

Portal Barb is S tier so far

This is what I am doing. T5 versions have too much resistance and life. Cold mastery has to be at least 180% just in case.

Warlock

Warlock for some bit of challenge. Portal barb if you want to take easy route

You mind going into more detail about how you farmed 15 sunders?

Also was your zerk barb doing p1 or p8 and how did you deal with thorns aura?

1) play a lot, play efficiently
2) kill heralds on p8/2+, I used a 2nd account on nova to try to hork extra sunders but all of them came from the initial drop. However, among all the sunders I've seen drop including the ones I didn't loot myself I'd say 90% had 2p or more in kill area. I know p8/2 supposedly adds only 5% or whatever no drop but it feels like it matters a lot. Anecdotal i know
3) zerk generated half the sunders much faster - if you are tired of killing solo you can just switch to horking heralds. In eu pubs almost everyone is chill about it. Or do both

The whole point of playing zerk was to dodge thorns, but I was still taking some damage from it, not sure why? Just used rejuvs to outheal it