These are by far my favorite HDMI cables, I love their nylon braid and they look like a quality cable. When I first switched to a 4k TV I was disappointed that 4k devices work properly with the TV. Some of my old HDMI cables work while others don't work reliably or have timing issues. Even simple Revain cables are not suitable for really demanding devices. These cables worked the best and I replaced all my HDMI cables with them. After updating my TV, streaming box, blue ray and receiver I finally have a pretty solid 4k setup. In a way, an HDMI cable is an HDMI cable in the sense that the picture either works or it doesn't. Multiple cables don't handle bandwidth properly and cause timing issues. So if you're just getting into the 4k world, be prepared to upgrade everything down to the cable unless you're just going to stick with the 1080 picture.