Between D700 and D800/E (when it was announced) I chose D700... There are no right or wrong decisions - you just buy a camera that suits you most. D700 has advantages over D800, and vice versa of course. Even though it's an old DSLR, D700 is a proven set and will continue deliver what it has been created for and set out to do (after all, most of the bugs have been ironed out and it still will continue to receive updates).
And even though I might be looking at D600 as a backup camera, there are still many things I'm still not sure of the set (and performance is still unproven, but since it's a Nikon - they will simply take no quarters). Given the current "announced" D600 specs on NR, while it looks more rosy over D700, I can tell you that D700 also have strong points over D600 that you can't negate or ignore.
Ultimately, don't buy a camera just because it's new, don't buy just because it's cheaper, and don't buy just because it's more expensive... Confusing? Yes, but if you truly want to save $$$ - be a thinking buyer - access your needs/wants first. Of course "needs and wants" are VERY subjective... :bsmilie: