What "IF" no D300 replacement? What next?

I've got a D300 and am pretty happy with it.  Sure I'd like a camera with better AF acquisition and tracking, better DR and better low light capability, but 99% of the time I don't need those things and I can keep happily using my D300.  For most of my shooting I'm the limiting factor, not the camera.  If I want to spend money I can go to a workshop or two.

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--Bob