My wife has been dabbling in semi-pro photography for the last year or so. She has come a long way and feels like she is ready to upgrade to a more serious camera. She mostly does newborns/seniors/family pictures but has dipped her toes into wedding photography with good results.
As we started looking at her upgrade options, it became clear the D600/D700 are the two cameras at our price point that she can move on to. The D700 is unanimously raved about by virtually everyone she knows, but cannot be bought new anymore and most of the used ones with ~10k actuations are selling for roughly $1800 on eBay. We could pay an extra $200 and have a brand new D600 with warranty and all that good stuff, which makes me feel a lot less nervous for the money spent.
So, long story short, for someone doing portrait photography with 2k to spend, would you recommend buying a slightly used D700 or a brand new D600?