>I am one who thinks old habits can change which means any >camera can become like an old glove if one gives it a chance. >Most often cameras with "bad" ergonomics, are just >ones for which new habits have not been adopted yet.
Stan speaks words of wisdom. Let me share my (limited) D600 experience.
I have a D700 and I've had three occasions to try the D600, D800 and my D700 at the same time (camera store). The first time I instantly enjoyed the D800 and hated the D600. I found the D600 confusing and unintuitive. When I left the store I relished that I had my D700 in hand to shoot with.
During the second visit I discovered, much to my surprise, that the D600 was not that bad to work with. I no longer hated it and instead though to myself "I could probably work with this camera if I had to".
During the third visit I actually enjoyed working with the D600. I could easily adjust ISO, WB, shooting mode, etc. and take the test shots I wanted. In fact, after I left the store I realized that I might have even preferred shooting with the D600 over either the D800 or my D700. It's lighter than my D700 and smaller than either the D700 or D800. The D700 / D800 bodies seemed a bit "cluncky" in comparison. On the other hand, that may just be the desire for a new camera talking!
So, I realized that I can work with any of these three cameras. The biggest feature gap for me is the D600's 3 shot limit on exposure bracketing. It will be somewhat painful to work around this (e.g. 9 shot bracketing), but it can be done.
The decision point for me is primarily based on whether the additional resolution, dynamic range and better noise control warrant the dollars I would need to invest after selling my D700.