Let me first say, that I am in no way a great or even average photographer. I take pictures mostly of my family on vacations, or the kids sporting events. I have been fortunate enough over the years to receive hand me down cameras and lenses from my father. My father has now gone the way of a micro 4/3 camera and has given me his DSLR. Now I have two DSLR's, and 6 lenses. For my needs, I do not need two bodies or 6 lenses. What lenses from the list below would you keep, Im looking to keep 2-3, the D90 is a no brainer over my current D50 as far as which body to keep. Nikon DX 55-200 Nikon DX 18-55 Tamron 18-250 f:3.5 - 6.3 Opteka 100-300 f:5.6 - 6.7 Nikon DX 18-105 f:3.5 - 5.6 Nikon Nikkor 50 f:1.8 Besides eBay, are there any good sites that will buy equipment, I know glass, or at least good glass (I think most of mine if good) is always in demand. Thanks for your help.