Are you sure you are talking about a D70 and not a D700 or D7000? The D70 is no longer made and does not shoot video as far as I know.
In the chance that you were talking about a D7000, I did have a chance to test one for a few hours. It was a very well built camera and I really liked it all around especially for video. I had no major complaints and I would compare it to the Canon 7D minus 60 frames per second.
Here is a link to the camera test edit I made:
http://vimeo.com/24587792
In the chance that you are talking about a Nikon D700, I'm sorry I have never used it. I'm not positive that it shoots video either without a hack but again I am not positive so someone correct me if I am wrong.