I promise my last question :rolleyes:, I have have an 18-55mm lens and another lens 75-240mm "g" for my D5000. I want to get the 55-300mm afs for it. Seeing the prices on ebay for a D70s = $100 or so. Should I get that and hunt for old glass. Aka I've seen a 70-300mm"G" for $99. Or just...