I sit 11ft from my 125" cinemascope screen and when I watch my 4K movies it look great. I could go closer and appreciate it even more but my seating distance is more for HD at this point.

I will just be waiting for Oppo to release their UHD player and hopefully M release and upgraded HD621 in the near future. Time to start saving I guess.

Theatre Room: Sony 4K VW500ES, 861v8+ID41, HD621, DSP6000's, DSP5000C, DSP5000's, Oppo 205, Sat STB, XBox One X, Stewart Cinemascope Screen, QNAP TVS 1271U-RP (96TB) with Sooloos/Roon core pkg.