Their current spec will change as their gear does. Here is what I am planning for at 80 in terms of talent point distribution:

http://www.wowhead.com/?talent=j0EMqI0csfMtzAZhxb0hZ0x

Hopefully this will give me the best survivability and all around healing with the guys. Definitely looking forward to the new patch 3.0.8 with the doubled healing from Blood Aura. =)