I have one shaman healer and 4 hunters and they are awsome. They took Durn the Hunger down without too much effort at level 66, lost one pet I think.
hunters are probably less work than shaman because of the auto fire.
I have my "Big" bang button as 3, it casts trinkets and any pets spells, another button to round robbin the hunters mark and set target.
I only use the hunters mark stuff for instances and I set each pet on a different target and they smoke stuff down.

I think you will like having hunters.