Sat 13-Oct-12 04:41 AM | edited Sat 13-Oct-12 04:43 AM by torwood
I have several grey market lenses, but they are older, non VR or AFS lenses. Not a problem with any (knock on wood). Assuming you understand all of the practical implications of grey market, my personal rules of thumb for grey market are:
1. Won't buy a grey digital body - too many things can break or go wrong. But, in the film days, I did buy a grey body, which was perfect for years.
3. Would definitely buy a grey prime non AFS lens if the savings was 8-10% or more.
4. Would possibly buy a grey prime/zoom AFS lens if the savings was 10% or more.
In the case of the 300 f4, I'd buy the grey version and put the $250 in your pocket. Nikon AFS motors don't fail that often, especially if you're not a working pro. If it were me, I'd roll the dice and hope for five good years. After that, someone, even Nikon, will repair your lens (I know others who have had it done). If not, Nikon in Canada will do it.
Tom's point about resale is valid - if you resale your gear. But, think, if you keep the lens for 10 years, and Nikon has replaced it with a 300 f4 VR, what will a USA version be worth, $500? Will you really get $250 less for your grey version? Just my opinion, but I doubt it. I don't really think of camera equipment as an investment.