Tried both, Bose X wins out without a doubt. X11's mp3/cellphone adapter is good, but keeping your hearing longer is better.
As far as that goes, I see there's a new adapter on the market which is a fair bit cheaper than its competitors.
http://www.sportys.com/acb/showdetl....roduct_id=9505
Anyone tried anything like this? I actually do need to speak on the phone from time to time with flying, and I'm thinking of getting one.