Hi Mitchell,


>I will buy the D7K (if I like the viewfinder) and use that
>with lenses from 10mm to 500mm and really enjoy the lighter
>weight, the improved low ISO performance (over my D200), the
>multiplier factor of 1.5 for nature. And 1 year from now, pick
>up a used D700 for $500 to shoot with some FX manual lenses or
>14-28mm lense for the hell of it. The D700 will hit $500, just
>a matter of time.

You are correct that it is "just a matter of time" before the D700 depreciates down to $500.00 for a used copy. I would not hold my breath thinking that the price will drop to $500.00 in the next year.
Used D200 bodies are selling for more than that and the D200 has been out of production for three years and was only about $1300.00 or so brand new. Best guess would be you have at least a four or five year wait. Then again you might get lucky and find someone willing to sell it for that price.
Good Luck and Enjoy your Nikons!

Best Regards,
Marty