I keep looking at the DxOMark reports and the D3s is darn close in color depth and dynamic range. The low light capability is better than the D4. And I too have a few CF cards for the D200. I am a skeptic on buying a "used' high end body like a D3s and that is the hurdle I must overcome if I move in that direction. And saving around $2K certainly makes my wife happier. Thanks for your response.