I am an amateur photographer in need of a 70-200mm f/2.8. I have been eyeballing the Tamron 70-200mm f/2.8 for a while now and at $699, new, it's a great price. I know the biggest set back on that lens is the poor AF quality. Right before I pulled the trigger on purchasing the Tamron, I found an awesome deal on a Nikon 80-200mm f/2.8 (two-ring version) for $620. Its not the range I want but I'm hoping I can deal with the 10mm. The catch with the Nikon is that the A/M focus ring is cracked, which is the major design flaw of this model. I figure this could be a quick fix with some super glue or epoxy. I am just hesitant to purchase something that is already broken. What would most of you do in this situation? Buy the brand new Tamron which has the 70-200mm range and a 6 year warranty but suffers from poor AF or buy the used Nikon 80-200mm which is pro-glass but will need some work. ..And let me politely stop some of you now by letting you know I am on deployment to Afghanistan and can not justify spending $2000 on the Nikon 70-200mm f/2.8, as much as I would love to.