I was wondering if anyone had a good idea of a BiS list for the following roles:

AoE healing
Tank healing
melee DPS
caster DPS

These lists would cover each of the levels of dungeon difficulty. It might be helpful for both new 50s, veteran 50s and the guys/gals not yet at level 50.

Any suggestions would be appreciated.

(And don't just say "just get upgrades from normals until you can heal T1." )