Thanks All for the great input. I just placed an order with B&H for the D800 and the 28-300 lens. I decided on that lens because I wanted more reach than what the 24-120 had and on the results of the DxO tests. I eagerly look forward to getting it so I can start capturing images with it.
I had my D80 for 7 years with around 30,000 images taken and as I said earlier, it still produces great images. I just wanted to take advantage of the technological advances over the past 7 years. Was wanting to move up to the D400 upon its release because I wanted a pro body but I don't think it will ever be released. I've been waiting 2 years.