Great review!
I too own a D700, but I've been holding off buying glass for it until after I try the K5
At which point.. I will decide which direction I want to take.
I know the D700 burries my K20D's in every sense other than on the ergonomics side of things so there's no need to make myself sick by borrowing glass to prove it
However, I have run into some major issues with replacing a number of Pentax primes that I've really grown accustomed too and I think that's going to be one of the hardest things for me to accept out of the entire deal. I've actually been thinking, I might just hold on to my legacy glass in hopes that Pentax might one day delivery a FF package.
However... there is good reason to beleive that the new K-5 may run in FF territory on a number of fronts. So I guess the logical thing to do(for me) is to give it a fair shake and see where things lead.
Though I have to say, It will be very interesting to run some head to head tests when I finally get both systems up and running.