Im looking to get a new lens for my Nikon D80. I've heard a lot of good things about the Nikon 70-300 f/4-5.6G AF-S VR lens and was looking at possibly getting this lens. My main uses for my camera are landscape and nature/wildlife. I would like to keep within the 500-700 dollar range. Any suggestions on a new lens would be appreciated. I was also thinking maybe of a less expensive lens like the 70-300 but add a teleconverter like the Kenko 1.4x. Thanks!