I recently purchased the 24-70 f/2.8 for my D700. I do a lot of event work so it is just right for my needs and also serves well for general indoor shooting. There are times, however, when I wish for just a little more on the high end. My wife uses the 24-120 f/4.0 on her D600 and really likes the extra range. It's not quite as sharp as the 24-70, but still an excellent overall lens.