These are the builds that I've theory crafted, usually trying to centralize on a set piece and specific damage type. I haven't tried them all so there may be some minor tuning to do with the skills/gear. Use these guides as a good start/base-point.

Some builds are more gear specific then others. For the armor as a general rule of thumb, focus on capping your resistances. For weapons, focus on the damage type that your build does. Accessories give you a little wiggle room, can be more oriented for damage or resistance, which ever you're lacking.

Blademaster

Cabalist

Commando

Deathknight

Infiltrator

Mage Hunter

Paladin

Purifier

Pyromancer

Reaper

Sentinel

Sorcerer

Spellbreaker

Templar

Warder

Warlock

Warlord

Witchblade