es el stat principal, no es el unico que te sirve, deberia ser el primero que se tenga el cap para raidear.
depende de la clase saber cuanto hit debes tener, y tambien de la rama que uses de talents ya que algunos de estos agregan hit


Death Knights: 164 dual-wielding 1H weapons with Nerves of Cold Steel
Hunters: 164 with Focused Aim
Rogues: 99 with Precision The poison hit cap is 315 with Precision and 446 without (based on spell hit).
Shamans: 66 with Dual-Wield Specialization For Maelstrom Weapon, enh shamans will however have to gear for the spell hit cap 446.
Warriors: 164 with Precision


estos son con spell:
Death Knight: 368 with Virulence
Druids: 342 with Balance of Power, 263 with Balance of Power and Improved Faerie Fire
Mages: 368 with Precision for fire and frost mages, or Arcane Focus for arcane mages; 289 for arcane mages with both Arcane Focus and Precision
Priests: 368 hit rating with Misery, 289 hit rating with Misery and Shadow Focus
Shamans: 368 with Elemental Precision
Warlocks: 368 with Suppression

fuente: WotLK Hit Caps | Tank like a girl

fijate que varia segun la clase