Nikon question: shich setup will produce better image quality?

[john dough]

I have on order a Nikon D700 with a 70-300MM VR lens. I sold my D300 to a colleague and after seeing some shots (online) from a D300 with a 70-200MM 2.8 VR lens, it made me think that was a better setup, as far as better IQ.

All things being equal, which setup, in your opinion, would produce better IQ? The FX D700 and the 70-300 MM or the DX D300 with the 2.8 70-200 MM? I am going away on a mini-vacation next week and want to get the best IQ shots possible.