I currently have a D-80, a Sigma 17-70 f/2.8-4.5, and a Tamron 70-200 f/2.8. I am thinking about selling my lenses and stepping up to a Nikon lens. The 17-70 is way wider than I need, and I dont really need the 200 on the high end. I need a good all around lens, because I havent been at this long enough to know what I really want out of a lens. I have a good Idea, but I want some opinions. As far as what I'm shooting, it depends on the day. I'm still in full-on learning mode.