I use the Light speed zulu's in GA aircraft. Great headset and they always offer deals to get the price down to around 600. Having said that both the lightspeed and the Bose are not TSO'd. They are not legal to use on a part 121 flight. You can get pink slipped for using either headset unless you were the ear buds with the Bose and no one does that. If you move on eventually to a larger airline you may find you have to ditch the bose.