Some bring up the 30Hz HDMI issue, others note CNET 4K articles but I'll skip 4K for a time and get to the store but not let the sales show me the screens at me standing a foot away from the 4K screen. Even 720p Plasma rivals a current 4K screen. Read http://www.cnet.com/news/budget-tv-resolution-rumble-720p-plasma-vs-4k-led-lcd/

My thoughts? Don't over invest. Get a 2 year warranty. Read CNET 4K articles.