Epics and their relative powers

[Renault]

There are only a few epics that are truly unique and irreplaceable, a few others that make raids raiding or soloing more efficient , and then some that are totally replaceable such that you stop using them by end-Velious.

Unique and irreplaceable:
Bard epic
Wizard epic
Mage epic

Makes soloing easier due to clicks/procs:
Shaman, Druid, Shadowknight, Enchanter
Ranger, Monk (these also add +atk in a way that isn't replacable in slot)

Makes raiding easier:
Cleric, Warrior (somewhat replacable)

Replaceable:
Rogue, Paladin, Necromancer