If you take the used D700, you'll get an excelent camera, same AF as the D300 (i guess), better low light high ISO, better DOF, same controls, same grip and same battery type as your D300. The D600 route means new technology, new sensor, more pixels, not so big camera, not so good AF system (i guess), slower fps rate, new grip, new battery.
I was "almost" in the same boat a few months ago, coming from a D90, and, after the D600 was announced, i opted for the used D700. For me, it has better button layout, better built camera, share the same battery as my D90, better AF than the D600, enough pixels.
Nikonians!!! My best investment made after my camera!!!
Sun 21-Oct-12 07:21 PM | edited Sun 21-Oct-12 07:23 PM by GiantTristan
I have been using the D700 for over four years. This is an outstanding camera , and I see no reason to "upgrade" to the D600/D800 - if Nikon comes up with a lighter and less expensive version of the D4, I might be tempted. Ergonomics and built of the D700 are very similar to the D300, and you can use the same charger, battery, memory cards - and computer.
Both bodies are excellent. As stated above, the D700 has just about the same control layout as the D300 that you are used to and a similar FPS rate. The D600 has more resolution, dynamic range, and better high ISO performance than the D700. The bottom line is you can't go wrong with either body. Pick the one that works best for your particular requirements. Good Luck and Enjoy your Nikons!
This was the exact issue I faced last month. After very extensive research, as well as my bias towards the D700, I purchased a good, solid used D700. One consideration you might take into account if you go the used route: an extended warranty. There are some great deals now on nice used 700s that didn't exist even four weeks ago. I decided to pay a little more and went with an established photography dealer so that I could add a two year extended warranty (added $99 to the bottom line cost) So that gave me 30 months of coverage. There are only two extended warranty plans I would ever purchase: cameras and computers. I would also add that the issuer of the extended warranty makes a big difference: who is going to do the work on a damaged DSLR? I've read a few horror stories some have experienced from shady warranty operations. A little background check goes a long, long way to keep a buyer happy.
I don't know what you finally decided on, but I have a D700 and don't really feel the need to invest in a D600 or D800. In fact, I prefered to invest in the grip and the EN-EL4a batteries to increase the fps to 8. I going to try to take more "birds in flight" photos and for sports it would be hard to find a better FX camera body. Whizzing along at 8fps is exhilarating to say to the least.