The transition from a D700 to D800 should be easy. I had no trouble moving from a D300.
It's a great camera. After 1.5 years I'm still amazed with the image quality, especially the detail I can draw out of the shadows.
Gary in SE Michigan, USA. Nikonians membership - My most important photographic investment, after the camera. D4, D810, D300 (720nm IR conversion), D90, F6, FM3a (black), FM2n (chrome) YashicaMat 124, Graflex Speed Graphic 4x5 My Nikonians Gallery & Our Chapter Gallery