After researching the internet and visiting camera stores for hands-on experience, I chose D700 without regret. There are many people out there trying to make the decision of the 3 wonderful cameras. I can only share my analysis based on my need and experience, as an avid amateur photographer.D600: the solid pro-sumer body feels the same as D7000, which I also own. Nikon transplanted the FX heart into a DX body. It is very natural for D7000 owners to upgrade to D600 for the ease of use on functions and layouts. However, I dislike the AF system concentrating mainly in the center, which can be challenging when trying to focus under certain situations. In addition, the problem of the occasional oil spell/dust on the sensor issue can be an indication of quality control problem of this model. I have tried to clean camera sensors before; it is far from easy to do so, wet or dry method. Therefore, most professionals dissuade the general public to do so and recommend leaving the job to the authorized dealers. Believe me, it is beyond annoying when you see spots on your pictures; and sometimes the spots appear in the place that can be very hard to correct.D800: nice pro heavy body with a huge 36mp sensor. Upgrading from a DX, I can not justify spending (jumping) thus much on such a powerful camera. Instead, as most professional photographers suggest, I will spend more on quality lenses, which usually out-last the cameras. If you own D800, you'd better have pro lenses. Otherwise, all the "defects" will show up in pictures with its huge and powerful sensor. In addition, D800 also has its own quality control issues, which is back focusing. Also, as an amateur, I tend to shoot more pictures than the pros, making sure I get the pictures I want. Therefore, I end up with a good number of pictures after an assignment and it takes time to process them. I am not ready to store (space-wise) and process (time-wise) big files from the D800 yet... maybe much later.D700: I picked this "old" camera over the two new models. It is a pro body, weather sealed, similar weight to D800. The layout is not too different from D7000 (thank goodness!) and easy to get used to. Since it is discontinued, the price dropped to the level that it is quite affordable, especially used ones, though be careful with the "used" condition, as it varies A LOT! This is the trial-and-true cameras, a work horse for many professionals. Despite having an older sensor, D700 still can produce exceptional images with wonderful sharpness and color rendition. Pairing it with the right lenses, you get "gallery" quality photos/prints. I don't worry too much of the "small" 12 mp sensor. As an amateur, most of us don't print over 2'x3' anyway. Its renowned focus system is outstanding, right on everything every time I shoot!I care about the image quality (what my eyes can see), body built (how my hands feel), and the focus system (the first and foremost ingredient in sharp image). I believe all these 3 cameras are capable of producing excellent pictures. Currently, the D700 fits my need, my budget, and the overall quality I am looking for. After all, all the equipments are "tools" at best. It is the photographer that takes good or bad pictures. A soft but well-composed picture is not as bad as a sharp yet meaningless one. 

Question: How was the camera?
Answer: I believe all these 3 cameras are capable of producing excellent pictures