In all of my research, I was told to check that the Panasonic AG DVX100B was made IN JAPAN and nowhere else, but also made FOR the U.S. (if you live there) so that the warranty you purchase will work.
In the end, I DID buy mine from Beach Camera after a lot of exhausting back-and-forth research on the internet, phone calls, etc., and I was very pleased with the price and the company. Also, the Mack extended warranty was on special at Beach.
I was going through B&H at first, but they were back-ordered and were unsure of when their next shipment would arrive.
Hope that helps.
Jess
P.S.
I have no $$ connection to any of the companies listed in this post.