I only kept the raid gear for my hunter. I had full sets for my Titan and have gotten 2 pieces for my warlock. But my hunter will be the only level 30. And I have a whole different set of gear for pvp and pve. It is just a level which means you take less damage and deal more. That's it. 29 is the real max level because you can have so many different varieties of armors that fit to your gameplay.