I just got my set a few days ago and haven't stopped using them- no recharge necessary- yet! The sound is better than all but some of the very top end headphones, but then again, they're not $400 either. The bluetooth pairs quickly and worked great, at least to 10 metres. Even with video, I didn't notice the time lag that I've read about in other reviews, when viewing on my laptop. If I have any qualms, it could be the ease of use and the build. I have big fingers and the controls are very close together, so it's difficult to distinguish one from another. They just need to be separated a bit more and perhaps made a bit larger. The build quality is actually good. I just wish for a product that works so well, that they would make headband and can brackets out of metal(titanium, aluminium or magnesium) or carbon reinforced fibreglass. Maybe the plastic on these is good enough, but I just get the feeling that one day something will snap, and then in the bin they go! For now though, I'm just really enjoying them, and they're perfect for the plane. The very small size when folded make them ideal for travel.----One last note for travel: what I would like to see on a headset like this, that I haven't seen on anyone elses either, is a microphone that you can activate when you are at a ticket counter or giving an order on the plane or in a restaurant, which will amplify and relay the ambient sounds to the can speakers, so that you can hear whoever you are speaking to, without having to take the headphones off. Just push a button and the music or other input would cut out and the microphone would activate.