As it stands, the Bone armor set is crap. pushing 60s at best
The rathma, pet set, is pushing 90s.
Pestilence set, the corpse lance one, no one uses.
The Blood set, falls in 2nd but is a bit weird.
Overall it seems like they are pushing the pet set for top. and they are adding ridiculous stacking mechanics everywhere. At this point id rather play a barb on live.
bone armor stacks. With the inarius set it will refreshwhole stack, without it, each stack is refreshed individually, so you will lose most of it during rg.
Rathma set, stack dr on pet hits TO 50. hope you dont lose that stack
Blood, play with stacks of a healing damage back n forth crap
Plague, stack damage up on coprse lance with the set and a non set legendary. every single one is based on stacking mechanics, sometimes 2 or more if you use bone armor.