I've been using Ancient Aquir Artifact in an EH/I don't want to die set. Until recently I've been happy with this choice and did not doubt my choice in the least.
Typical EH setup:
16314 HP (unbuffed)
18537 Armor (unbuffed)
74 Hit 20 Expertise
Trinket 1: Ancient Aquir Artifact
Trinket 2: Commendation of Kael'thas
My reasoning is this, if I am worried about dying the best way to constantly reduce my incoming damage is to increase my armor, so on these fighs I chain drink Ironshield Pots and use the clicky of the Artifact whenever it's up.
Should I reconsider my gear/stat choices for an EH set?