8-0-53
This spec is the best for raiding. The build is designed to reduce the damage taken by fire, frost and nature by 10% while maintaining all the core healing talents. Shaman put 5 points in Concussion and 3 in Elemental Warding.
Many bosses in SSC, Black Temple and Mount Hyjal do quite a bit of elemental damage to the raid. And let's not forget all the elemental damage in Kara. The less damage you take, the less time and mana you have to spend healing yourself. This also boosts your ability to survive.
Here is a sample of the 8-0-53 spec
http://www.wowhead.com/?talent=hVcZZEc0tAeoted
0-5-56
This is a very common spec but I don’t think it’s the strongest use of talent points.
Five points in Ancestral Knowledge boosts your mana pool by 5%. It sounds like a lot but a closer look shows you get a poor return on the points spent. The extra mana will probably be only enough to cast one extra chain heal.
Existing mana pool: 10,000
+5%: 10,500
Boost to mana tide: 120/5 minutes = 2 mp5
The smaller your mana pool, the less benefit you receive. A shaman with 8,000 mana gains an extra 400 mana and only 1.67 mp5 through Mana Tide.
Here is a sample of the 0-5-56 spec
http://www.wowhead.com/?talent=hZxZEfotAeoted
0-0-61
This spec allows you to pick up nearly every talent in the resto tree. However, 8-0-53 is still the best choice.
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