Panasonic Avionics's Astrova is now shaping up to be the standard for in-flight entertainment. Astrova offers a 4K HDR display embedded on a seat's headrest. This is a welcome upgrade from the LCD screens that have been a standard for the economy class. The company offers the Astrova in 13, 16, 19, 22, 27, 32, and 42-inch screens.