I just started two new 5 man teams for the Cata Expansion ( I only used to dual box).

Since I'm not able to create new topics yet, any advice for the boxing 5 different class changes with the healing changes in the cata expansion?

My first team on alliance is a Feral Druid, Hunter, Balance Druid, Shadow Priest, and Mage. For dungeons, I am thinking of going dual healer with the priest and druid to help with the Cata triage healing system. If having 2 healers is overboard, which healer is better for boxing, druid or priest?

My second team on horde is a Warrior, Death Knight, Paladin, Warlock, and Shaman. I don't want to tank with the pally, so that leaves the warrior or DK. Any tips on which tank/dps combo would be better for 5 mans? I'm thinking prot warrior/unholy death knight for the utilities the DK would bring against casters in dungeons. I guess that leaves a dual healing setup with a holy pally and resto shaman until I get geared up and can handle heroics with just 1 healer?

My rogue is on a pvp server in case all this doesn't work out =D