Im currently 10 boxing a melee group and love it. 4x enh sham, 4x frost dk, prot or holy pally, and resto druid.

I pvp alot and it is great! basically untouchable. have 2 shams in each group providing 2.4k heals per second with their heal totems and resto druid spamming wild growth every time its up. Then when needed every 3-5 hits get instant shaman 20k+ x4 heal or massive 4x chain heal or even healing rain. I have 5x battle rez with the dks and druid as well. Pretty sexii.