I've 5-boxed all of the normal dungeons, killing every boss, with my mixed team - pally tank, priest healer, mage+hunter+warlock DPS.
For me, the final boss in Lost City of Tol'Vir was the worst by a long shot - nightmare the way he bounces everyone all over the place at the phase transition and collecting the group is a pain. If he bounces anyone off the roof, it's almost certainly el-wipo
I'm just after my last couple of upgrades before I start on heroics.
I got Tol'Vir last night on the random dungeon finder and wiped on General Husam 3-4 times and decided to go do some AV's instead.
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