Just bought a 50PX80U this weekend online. Hoping to get it by friday, next monday at the latest. I'll post some pics and settings once i get everything connected.
Haven't seen anyone mention this yet. I know there was talk about new pannys being more efficient this year, and turns out likely wont happen till new plant opens. While obsessively researching this TV came across this info from Crutchfield.
Power On (Manufacturer) 50PX75U -- 499 max W, 50PX80U -- 497 max W
Power On (Crutchfield test) 50PX75U -- 365.5 W, 50PX80U -- 187.85 W
According to their tests, new 50" panel is almost 2x as efficient as last years!