I'm looking to get a new TV under $500, and preferably no more than $400. I read that the LG 43UJ6300 is a fake 4K because of the white subpixels, so it's not as sharp as a real 4K screen. Here's the thing, though. My current living room TV is a 32" 720p (1080i) TV that's 7+ years old. We just...