There have been a few comments made that I don't strictly agree with, but I share the overall sentament that moving to the D700 for landscapes would bring minimal returns considering the outlay involved. To begin with it is not true that all pixels are created equal even when you don't need higher ISO's. However if you stick with good quality lenses you will indeed be hard pressed to see a difference in most situations. The second is that FX format is better for you if you want to use wide angles. It's true that a given focal length of lens will give you a wider view on an FX format camera than a DX format camera but that's only half the story. You can buy a wide angle lens that is only compatible with DX for much less than a lens that could be used on an FX format camera to give equivalent results.