Not specific to a 670, and did give this some thought, but was reluctant to name just one or two. I have bought from at least 15 different Japanese sellers on eBay, and have never had a problem. Would have to say that, as a rule, the quality of the cameras, lenses, whatever, the quality of the packaging and the quality of communications has been better than buying from my fellow countrymen, where there have been the occasional glaring misrepresentations and ridiculous packaging. Obviously, there is no hard and fast rule, just my experience. If using eBay, I always read the feedback comments not just look at the percentage favorable. If I was having to make a blanket generalization about which was the best country to buy cameras from, it would be Japan. At least in my -way too much- buying experience