I've always been of the opinion that the Bose is only worth it if you listen to music while flying. The stereo sound is wasted otherwise, so you're just paying more. I have not heard many good reports about the X11s. I'm using Flightcom Denali's right now and they are great. I've had them about 6 months and they don't tire me out or wear me down. Battery life is pretty good too.