why do you care ? They are all the same. Amazon and B&H take back broken stuff. Many dealers want you return back to the manufacturer. You are buying products from Western Digital, Seagate or Samsung. (maybe Toshiba). No one is going to treat you “special” and give you free tech support. Other good web dealers are Provantage, Newegg, and OWC. But there are lots of good dealers. You order on line, and your stuff shows up. What are you looking for – personalized attention ? This is called a Value Added Reseller. And you pay for this service.
Bob