The B7 is a mid-range 4K OLED TV with all toys. You want Dolby Vision on top of industry standard HDR10? Check. Fancy a slick design that's not just another black bordered flatscreen? You got it. The B7 is LG’s entry level OLED screen, positioned below the below its C7, G7, E7 and W7 models; it’s available in both 55- and 65-inch screen sizes. For...