Keith
The best camera is one that still works!
I continue to be amazed by my Nikon.
You expect too much from auto focus. Buy a D4s to get the latest. Even if the camera can not track long jumps, some point in the expected path can be prefocused.
I do not want Nikon to mess with the raw files. I have Photoshop and know how to use it with presets and across multiple pics with a few clicks. There are camera settings that adjust JPEGs in camera.
Digital is the best thing invented since Ektar 25 color negative which unfortunately had a pretty short run.
Digital provides high ISO settings we only dreamed about years ago.
I have absolutely no criticism of the D700's focus abilities ... they are phenominal. Maybe you misread my post?
The Sigma on the other hand is pretty awful IMO. 😀