Anyone have one? Worth the extra cost? My TV is about 11 years old and I'm going to buy a new one in a few weeks before the regular season gets into swing. Thinking about buying the one below, it's about another 700 more than a 1080p of the same spec would be. Have read you need to get at least 50-55 inch TV to really notice the 4K difference. Worth it? I'm aware of the receiver requirements for HDMI 2 and have that covered as well as upscaling.