As the owner of both the D700 and D800 I would pick up a D3 or D3s. I love the D800 but the file size is so large and I don't consider it a good choice for my kids soccer and basketball games. I don't yet own a D3 but I get one for next season. The 12mp images I get from the D700 is perfect for sporting events. IMO the D800 is the perfect camera for landscapes, portraits and macro photography.