Here is a great link to get great product reviews and comparative price information from all vendors and with customer satisfation/disatisfaction comments
http://www.imaging-resource.com/
I have used several New York mail order services without problems but you need to be stern with the guy on the other end. They will try to sell you the world if you let them. B&H is safe as is Camera World in Portland Oregon. Many e-tailers do business out of an office with no storefront with merchandise "drop shipped" from the manufacturer or distributor, virtual inventory. You have to watch out for dealers peddling "gray market" stuff with International Warrantys to unsuspecting buyers. Be sure you are getting what you want.