I think The time has come for me to change my extremely old HDMI cable 15yrs for a newer higher spec. cable . The length required is 7,5 m min. It will be running from my amp in the ceiling to UHD30 4K PJ. What are you using , would suggest or even offer if you have. There?s tons on line that all profess to be high speed , 4K but honestly they don?t look like quality and their cheap prices make me more and more skeptical not that I want to break the bank ... Ta in advance