Nikon d7000, Nikon d600, or Nikon d7100??

As a prevous owner of the Nikon 3100, I have made a decition to move up to a "newer and/or nicer" camera. I have been looking at the Nikon d7000 for a while now and I have finally earned enough money for the camera ($1,500 takes a while to earn for a broke college student.) I was just about to purchase the camera until the new Nikon d600 came out. Now I see that the new trend for 24mp camera is on (d3200,d600,etc) andknow I have an addition choice. Do I go ahead and grab the Nikon d7000arhat I have been saving foget wait a little and earn enough for the d600, or do I wait even more a soon to be replaced d7000?