Overall, I think these headphones are great. I wouldn't hesitate purchasing them again.On the upside, I definitely appreciated:1. They paired without hitch to 3 devices: 2 computers and 1 cell phone.2. They sound great! Not as good as my noise cancelling Sony wired headphones, but better than my wireless Sennheiser headphones. Compared to my Sennheiser headphones, these do not contain a background hiss/buzz sound. I attribute this to the digital bluetooth connecter versus the analog connection for the Sennheiser.3. They are comfortable! I have a big head and at first I thought that they were way too tight for me ... then I discovered that the band over the head is malleable. After bending the band over the head out a bit, the ear muffs are now putting just the perfect amount of pressure on my ears. Additionally, compared to my other headphones, these are featherweight light. I almost forget I have them on most of the time.On the downside:1. The size of the controls are ridiculously small. Similar to my large head, I have large thumbs & fingers. I have about a 20% success rate trying to adjust the volume without actually taking off the headphones & looking to see what I'm doing.2. None others that I've encountered!