Whether you're in seat 24B flying to Cincinnati, getting some work done in your local coffee shop or toiling away in a cubicle farm, headphones are essential equipment if you don't want to bother -- or be bothered by -- those around you. I decided to try out three recent Bluetooth headphones that were light enough to carry along with you, good enough so that you could enjoy your music and carry on a business conversation, and something other than stratospherically priced.