On the ropes about 5th for my 4x shammies

[Shodokan]

Option 1: 5th shaman

Option 2: Hunter
- 25% reduced healing on a target
-Pet buff (if bm)
-Traps
-Decent damage
-Very mobile

Option 3: Death Knight
-Lots of things to keep track of
-Huge damage
-Reduced healing on opponent
-Multiple means of slowing the target down even if a melee is on your team
-O'Shi buttons for when he gets low on health to get heals more efficiently, anti-fear
-High burst in both frost and unholy
...we all should know the options by now.

Option 4: Boomkin
-Knockdown
-Solar Beam
-Being a huge chicken
-Overgrowth (root all targets in 8 yards... far away)
-Typhoon = another GTFO me spell
-Land mine mushrooms you can lay inside the group to deal damage to melee
-AOE silence/interupt (1 min cooldown)

Option 5: mage
-Lots of ways to freeze opponents away from the shaman
-Good burst
-Pet
-AOE slow
-Living bomb
-Impact
-Frost has 20% reduced target received healing

Probrably going to end up going with a 5th shaman... but i think DK and boomkin are strong candidates as well as hunters.

Opinions please