NLewis
Established
All SLRs are best when you are primarily focused on photography. This could be landscape, posed portraits, or even street stuff but you'll look like a photojournalist. If you want a camera to carry with you while doing other things, like travel, then SLRs are not so hot.
I get the impression that you are not so serious about this sort of thing that the D700 is getting used much. It seems like you would prefer a compact, easy to carry camera.
I would suggest that you just keep the X100 and shoot it for a year. Sell the D700 if you like, or keep it for the year (it will depreciate). The X100's 35mm-equivalent lens is fine for landscapes. Stop shopping and swapping cameras.
I get the impression that you are not so serious about this sort of thing that the D700 is getting used much. It seems like you would prefer a compact, easy to carry camera.
I would suggest that you just keep the X100 and shoot it for a year. Sell the D700 if you like, or keep it for the year (it will depreciate). The X100's 35mm-equivalent lens is fine for landscapes. Stop shopping and swapping cameras.