The good of the aptx-HD cable: It really sounds awesome and the connection process is super simple. A ton easier than my Senn MTWs for example. Literally no manual, just pop it out of the box, hold the button, pair. Done. The aptx-HD is definitely clear and that keeps the ZSX sounding all nice and clear. The less-good: There's a noticeable hiss. It's not huge, and (mercifully) it's not only on one side like the Jabra 65t so it's easy to forget, but it's definitely there. The bad: Oh my god the ear hook part of the cable is trash. The loop is huge and can't be adjusted, so unless you have ears the size of cereal bowls the cable is never gonna stay behind your ear. I'm using this at the gym so I have a skullcap to hold them in place, but otherwise it's a nightmare. Overall if it weren't for the huge cable issue I'd call these an A+. I don't know if I'll keep it.