Why? From what I've heard Vizio is actually a good brand (putting out better quality stuff because they don't have the name recognition that some of the others have)
Customer service is worst in the industry. Try to call saying you have multiple dead pixels on a new set just out of Costco 90 day returns and see what happens. If you enjoy having to wait over an hour and then pay to ship your TV back and you consider that standing behind a product, go ahead and purchase.