We still do it with 3 tanks, 3 healers. We found it pretty much trivializes the fight - very little damage taken and very little to heal. We might consider changing it to 3 tanks/2 healers or 2 tanks/3 healers, but why change what isn't broken just for a little extra DPS?
Paladin tank/Druid Tank/Warrior Tank
Holy Paladin/Holy Priest/Disc Priest