Which should I do ... I recently got a new D80, and had planned to keep my D40/18-55mm as a backup. However, today I got offered 400.00 for it. Should I keep it as a backup or should I sell it and pick up some lighting gear? (maybe a set of SB-600s?) I have some decent glass ... just picked up the 18-200 VR this weekend, along with the stock 18-135, and the classic 50mm, but my lighting selection (while acceptable) is somewhat outdated. Opinions?