I have the Bose X from flight instructing. I've tried everything and went back to my Bose. I've tried CA's 850's and they're too loud, need ear plugs. There such a quality difference between the Telex and the Bose for sure. It's a pain to carry around since they don't fit in my flight kit but it's still worth it to me. I'm not just going to let them sit in my closet or something.

As for the iPod, cell phone, blue tooth BS. The FAA will really like you playing with all that $#!T on your line check. As far as I'm concerned, those features mean absolutely nothing in the cockpit.