I have a limited budget and I need a good macro lens for stock photography. I am considering buying a used lens from ebay. Does anyone have any experience with any of these lenses? I have a Nikon D80.
Tokina AT-X 100mm PRO D F2.8 MACRO
Tamron AF SP 90mm f2.8 Di MACRO
Sigma MACRO 105mm f/2.8 EX DG
Assuming they will all sell for similar money, which one will give me more bang for my buck. The Tokina seller is local to me, so I can collect and minimize the risk of being ripped off.