Damn, but I hate upgrading. Nothing ever works properly. Its been a few years since I have posted on this site, but I am afraid I am back asking for help. My old Panny plasma that had a projected lifespan of 5 years when I bought it has soldiered on for 10, but it is now time to upgrade to 4K. Having read a few cautionary tales, I had purchased 3 different 7.5M 'high speed' HDMI cables to test prior to installing the new setup in my TV room (LG65 oled / PS4 pro). I couldn't find a single cable that would work at full fat 4K (60fps, HDR, RGB - which I guess is 4:4:4). The Amazon Basics 5M cable worked OK, but none of the 'high speed' 7.5M cables worked at all (including the Amazon Basics 'high speed' 7.5M cable). Having surfed this forum, it would seem that full fat 4K is not really possible at cable lengths over 5M, and that fibre or 2xCat6 is the only way to go for a 10M cable run. Have I got this right? and if so, is fibre the best way to go forward or would 2xCat6 be best for a 10M run? I really don't want to have to do this twice. - and just an observation, but it would seem that current data rates have left the HDMI standard behind. Perhaps HDMI has had its day and it is time to move to a fibre based standard instead.