I usually play ret or prot paladin, but I also have a hunter or dk. But between the Paladin and hunter are the classes I know the best. I read various forums to get the latest updates on recommended stat priorities and rotations. I always try to look up all the raids fights before going into a raid so I know whats going on.
Here are some logs from pick up groups I joined
DS 6/8 H 10 man - http://www.worldoflogs.com/reports/rt-pqhs9nm700q0lprl/
Ultrixion H 25
My item level when I did these was 397.