Lets keep the discussion to a single topic, pro versus amateur build quality. There are enough D7000 topics that cover image quality versus other cameras.
but I think this discussion is going well
top of the line amateur Nikon camera : D7000
present Pro lineup: D300, D700, D3
with a sprinkling of D90 thrown in for flavour.
you cannot have this discussion without mentioning cameras, and the D7000 is the latest and best amateur camera, so it will get mentioned
my 2 + 2 cents = 5