Using the supplied sky hdmi cable worked fine with the sky hd box set to 1080i output and our samsung full hd tv set to match thiswe were perfectly happy with the picture quality using this combination until i then i decided to look into buying a new 4k tv after reading up lots online about the latest hdmi standards required to get the full advantage from 4k tvs i wondered if a better cable might make a difference to our current setupenter the pa ultra hd h