The Best Bluetooth Headphones for Less Than $500

The technology driving wireless headphones has not yet reached its full potential. But over the past few years, Bluetooth has advanced to a point that less than $500 can buy a pair of headphones with decent audio and respectable battery life. We rounded up four pairs and let 'em duke it out to see if any pair has the… » 9/13/12 11:00am 9/13/12 11:00am