In short. Helping a friend with a new TV. LG OLED65B6 with FiOS instead of the store bought RocketFish 4K HDR cable (1 for $60) = awful. It's almost like when HDTVs came out with big screens and we mostly had standard definition content. It really was almost that bad. Replaced the cable with this one (2 for $15) and the difference is amazing! The picture popped up like we saw the demo in store! These cables might not satisfy the hunger of the world, but they're definitely worth it if you want to make sure you have the best possible signal for an HDR 4K TV! BTW: I'm an electrical engineer, but I don't know why these are so much better! I don't care - they work.