Hi Everyone - I plan on purchasing an ATV but I'm not sure if I need the new one that was released or the cheaper one that's available. I have a 4K TV so I'm bummed the new set doesn't have it, but I still plan on grabbing one to stream from my phone and iTunes library. Are there any video enhancements between each set or is the new tvOS and Apps the biggest selling feature of the new one. Any advice would be greatly appreciate. Thanks!