Well I sold the whole camera and lens stuff as lot of money was tied in it and I wasn't using them much plus I needed the cash for some other expense. I sold the lens in ebay for more money than I had bought it and of course it was in immaculate condition.
The D7000 is great but I don't have a great lens like the 70-200 anymore. I am itching for it but for casual photography I am hard pressed to spend that much for that lens again....
I loved the D300 for two main reasons,
1) Solid build quality. The full magnesium alloy body and the heft, it felt good in your hands.
2) I think that for an APS-C sensor, 12.1 MP was the optimal limit. Any more and you are just cramming more pixels than you should.
Mixed reviews on the 70-200? Don't believe them. Try one for yourself, if you can get used to the weight. You will love it. But I don't know about the new one that they have released, as I had the older model.