4/5 Hyjal and on the verge of having Kael down then focusing on Archimonde, considering we raid 2 days a week it's good. Also Naj.
And honestly, you don't really have to grind out anything, I get one my main character for the two raids a week, maybe I"ll level an alt but I don't have to do a single thing I don't enjoy in WoW.
If you need money? for something, it'll take you bout an hour to make 150+ gold depending on how bad PVP is.

