I have twestions. Roku? Android? HDR? 4K? WTF? I've seen some mention having a browser included. is that actually desirable? I'm a cheap skate so not interested in spending more than maybe $350. Looking for a 50" TV. I sit about 6 feet from TV so don't need a billboard. Don't play games, have Spectrum Cable, Netflix and Amazon. Last half dozen TV's were Vizio. Seemed fairly good.