Cost/performance, yep, D600 wins hands down against the D800/E cameras.
>So why don't we simply agree to disagree. As you say >yourself:
Because you are implying via your comments that there is a big difference when in fact, there is a small difference and there IS a big price bump for a D800E.
As I stated in my first response to the OP, if he thinks he will regret it, he should just buy it, but in the end, it's his money, his decision. Still, he is coming from a D7000, (a great camera as well), and I can understand his wondering which is the better choice.
All that said, the D800E is an incremental improvement over the D600 and Nikon has always charged a premium for their top of the line gear, so if he wants the 19% resolution increase, (your image quality argument, I believe), then he will fork out 50% more money. That is something to ponder.
"Extraordinary claims require extraordinary proof " - Carl Sagan