Got these 2 weeks ago. Just for work and maybe a little gym action down the road when I get some more time. They've just been sitting on my desk charging when not on my head. The sound is decent quality. I've had to do a hard reset with a paper clip on the reciever unit a couple times to get it to sync with the headphones. The volume up and down buttons feel a little cheap but get the job done if sometimes not until the second or third press. All these things considered I would say a 4 star rating because its cool not to have any wires and I can walk all the way down the hall before the music stops.BUT....TODAY I NOTICED THE HAIR LINE CRACK WHEN PUTTING THEM ON. Smack dab in the middle of the band.. on the underside. After reading all the reviews I bought them anyway and figured you guys just didnt take very good care of your stuff. I told myself they would just sit on my desk and when I started taking them to the gym and putting them in a bag(which is sure to break them by the way)I would reenforce the band with duct tape or metal. Well.. they've just been on my desk and on my head, and the motion of pulling them apart slightly to put on my head has caused the dreaded crack. What a piece of crap. Time to get the refund process going.UPDATE 12/2006 (6 months later): So I just reenforced the weak part of the band with duct tape and elctrical tape and never returned the head phones. They lasted for a few more months but managed to break even with the reenforcement. Now they are not longer able to sync with the receiver.