Hi all, I want to invest some money coming from a couple of lucky sells on alamy and getty and I was thinking to upgrade a lens in my kit. I have a NIKON D300, 16-85, 70-300 VR and 85mm 1.8. I do travel photography in developing countries therefore mainly street photography and portraits. I use my 85mm for portraits and I love it, but the lens that I use the most the 16-85 for reasons of focal length. andreamagugliani.com The 16-85 is a great lens, it does everything good but... nothing exceptionally. I know I can't get the quality of the 85 on a zoom but at the same time the images are a bit flat and the colors are not as great as I would like them to be. So the question is, how much would I earn upgrading the 16-85 with the 17-55 2.8? Or perhaps upgrading the 70-300 VR with a 80-200 2.8D? (weight is not an issue) Thanks all for the precious advice!