While your gearing options may vary, due to personal preference, the following pages have put together great guides for gear in Mists of Pandaria.

Druid:
Tree Heals Go Woosh (Spreadsheet!)
Cannot Be Tamed
WTS Heals

Monk:
Spiritwalker’s Grace
Cannot Be Tamed 

Paladin:
Bossy Pally
Healbot.net
Get Sanctuary
Pardeux Raids 

Priest:
(coming soon?)
Be sure to check out worldofmatticus.com and talesofapriest.com in the meantime!

Shaman:
From Spiritwalker’s Grace
5 man gear
Reputation gear

(last updated 8/30/2012)