It's debatable, but the D7000 is possibly the best DX available at present. If you can afford to change as you already have one non-DX lens compatible with the D600 it makes sense perhaps dependent on your photography needs. Don't be upset if the D600 nose dives on price if you buy now, otherwise wait 6 months for it to drop further.

A replacement D300s is hinted at, I say "hinted" as some commentators more wise and knowledgeable than I, say it will arrive sometime. I have retained my D7000 when I bought my D800. Slowly the D7000's creeping into my bag less and less. The D600 has a very reasonable fps and used in DX mode will give a reasonably acceptable file size for printing.

It's a tough call, but at least you're not burdened with a bag full of DX lenses so you can afford to be flexible.

Richard

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