Hey so I'm going to buy Canon's 7D soon and the cheapest I've found so far is on Ebay:http://cgi.ebay.com/Canon-EOS-7D-18MP-HD-D...=item53df6e1760I wanted to get others' opinion: is it risky to buy models from dealers like this, or should I stick with the really reputable ones like B&H. Does model quality/reliability vary much with the dealer? I'd like to hear what you guys think.thanksIsh