Ned. I shoot both D700 and D7k. At ISO800 on a reasonable crop the noise is almost non existent visibly with the D700 and what there is is easily removed without affecting sharpness. On the D7k it's certainly more noticeable and I never use the D7K above ISO 1000. compared to the D700, the images on close cropping allowing for the variance in distance is pretty poor and sharpening is affected vastly when applying noise reduction. That's why I am hoping for the D400 with upgraded noise handling.