We are national/casual guild, killed 7 bosses in BT.
Gear level - beginning of BT.
Group composition:
Protection warrior
Combat rogue
Combat rogue
Beastmaster hunter
Affliction warlock
Protection paladin
Frost mage
Shadow priest
Holy paladin
Holy priest
Completed with 4 minutes left.
It was 5'th reset when we tried timed event.
Order: eagle->bear->dragonkin->lynx.
2 people died in whole run.
Before we tried stacked melee heavy group with dps warr and enh shaman, but only one caster (mage).
Melee works a little better. But it does not matter much.
Prot pala switched to healing on Eagle. Prot war tanked lynx and also taunted spirit. Before we had issues with paladin not being able grab spirit's agro.
Resto shaman is better than holy priest there, but imho not classes matter.
Screen (sadly I forgot take picture where you could see left minutes):
ImageShack - Hosting :: wowscrnshot031508222514hp2.jpg