As Videolab said, B & H is consistently great - You will however sometimes find great deals at some of the mainstream retaillers - I have seen great buys (better than B&H) at various times at Costco, Best Buy, Circuit City & PC Richards. You have to do your homework (search around when you want to buy to see who's got the best price including tax and shipping) but I would suggest you really only buy from a very reputable source - I have purchased from non-famous entities (including eBay) have been burned. Learned my lesson on that one finally.