I have to say that I gave these headsets a fighting chance -- I am on my FOURTH set.  There weren't many alternatives for us folks who want wireless headsets while we work out or run.  But they always, always break.  And the bluetooth Ipod adapter, which is clunky, never works as well as the Sony dongle.  I would add that these headphones are not really comfortable, tend to ride the buds out of the ears as one runs, and can't be worn at the same time as sunglasses.  My latest set melted down just before a half marathon -- suddenly, they no longer take a charge.