We have been talking about 4K TVs for what seems like an eternity. This week Ara finally took possession of his VIZIO P702ui-B3 70-Inch 4K UHD. Now before you all say "no one can see the difference on a screen that size sitting at a normal distance", hang on until we get to the performace part of the review. As soon as Vizio announced this set at CES Ara knew it was going to be his first 4K TV.