I bought this headset as a gift for my husband who travels quite a bit and wanted something to block out sounds on airplanes. My husband tried this headset and absolutely loves it. And so do I, which is why I went ahead and bought myself one as well. It really true HD sound is crisp and you can hear every single instrument being played. I also love how the surrounding sounds are pretty much completely gone as soon as you turn the noise canceling on, almost feels like being under water. With this Bose headset you can can listen to music or movies at a pretty high volume and the person sitting next to you won't hear a thing. Sound Quality Absolutely fantastic sound quality, there really isn't anything else like it. Crisp, clear, complete surround sound. Comfort - The leather trim around the headsets makes them extremely comfortable to wear. Both my husband and I have worn them on very long flights to Europe and they never bothered our ears at any point. Design - I love that it comes with an airplane adapter that fits in the airplane sockets. I also love how you can actually detach the cord from the headset for when you just want to block out the sounds and not have the cord dangling. It has pretty much replaced my earplugs when flying. Durability So far so good, we have had these headsets for over a year and have had no problems.