I am looking into getting a new lens for my Nikon and was looking at the Nikon AF-S Nikkor 70-200mm f/2.8G ED VR II Lens vs Nikon AF Zoom-Nikkor 80-200mm f/2.8D ED Lens. And advice on which one would be better. I am shooting harescrambles, which is woods racing so there is not always the best light conditions in the woods. I have been using my 70-300 f/4.5 and have been making work but just need a faster lens. Thanks!