Say hello to the new VIZIO XVT 3D series, while the XVT Pro line announced earlier this year (and that 72-inch model we were drooling over) were not to be, these 42-, 47- and 55-inch HDTVs are real and on sale today through Amazon, Sam's Club and Target's online shops and should be on shelves later this month. Features like the number of LED backlighting zones (for the 47- and 55-, the 42-inch features edge LED lighting), claimed contrast ratio, WiFi N and VIZIO Inte