Hi, I'm quite an advanced video user, and was very happy with the image quality of my X8 till firmware 1.4.6 (I use the default player, because I consider it the best in terms of video quality and tone mapping HDR). Then I tried both firmwares 1.4.12 and the new 1.4.16 and with 4k HDR content I notice some very bad color grading in the high lights, with solarisation and horizontal bandings (I already tried all possibile combination of deep color and color space). It's a pitty, because I think the 2 last firmwares are slightly better in terms of detail. Because of these issues, I had to downgrade to 1.4.6 firmware, but I like the new features of the 1.4.16 firmware (Ultra HD Blu-ray menu navigation, HDR switch and audio sampling pass-through). Any chance you could restore the 1.4.6 firmware HDR video quality in the next firmware upgrade? As the firmwares are in common also with X9S and X10, I suppose the issue affects also these models.