I have researched, waited, researched some more, focused on other projects, but the big update has finally come. I pulled the trigger on a Sony XBR55X900E 4k Display coming from Dell. It should arrive in a week or 2. This particular model was a late-comer in the list of displays I had. The XBR55x850D was at the top of the list, along with the Samsung 55 and 60 Inch 8000 series. Vizio has some nice sells on their site, especially the M-Series with the XLED Plus technology, which is supposed to be Vizio's version of Samsung's QLED I'm guessing. After reading very positive reviews, including the Youtube video from Rtings.com regarding the display, I decided to go with the Sony. The only real shortcoming is the lack of the X1 Extreme Processor which allows for future Dolby Vision Updates in the future. Not a deal breaker for me. This display runs Android TV, which I'm very familiar with through the Nvidia Shield, but the Shield will be the focal point of my system. New HDMI Cables, new Receiver, and the Shield will allow me to access 4K /HDR Content. Now my plans were to upgrade my Subwoofer during the summer, but that can wait. I'm also still looking into the Oppo 203 for UHD Content, but considering I only own one UHD Release, and stream most of my movies, the Oppo may have to wait as well. Vudu may suffice considering that they support Atmos for audio. Can't wait!!