Re: You do notice the cheap cables..
Yep. I had to get a 15m plenum rated HDMI to go up to the overhead projector because the suspended ceiling is about 3m below the real ceiling, and we weren't allowed to run the cable in a tray lower down because of something or other. Even the best HDMI cable (the ones that Kramer use) still ended up needing a signal regenerator after about 12 months of the cable being in place (dirt accumulating perhaps, or shielding starting to spread after a year's thermal cycling, who knows?). Without the regenerator, about a quarter of the computers that people tried to use ended up with picture breakup and loss of communication.