Vizio has been shipping its new P-Series UHD HDR Home Theater TVs for about two months and the reviews so far are very positive. As Vizio almost always does, they are aimed for the mass market with the 50-inch model priced at $999. UHD 4K and HDR are, we think, the minimum that consumers should insist on when buying a TV. Both are open industry standards and available for any set top maker to use. Vizio uses Dolby Vision technology to play content in HDR. Chromecast dongles are not needed because all the P-Series sets have Google Cast technology embedded. Any smartphone, tablet or PC with the Google Cast app can project, or cast, to the P-Series TVs any video…