Ya, apple… they really are harsh with that stuff. By XM5’s, you mean the Sony ANC headphones right? I have a pair of XM3 or 4’s can’t remember (I use them for flights and such). I love them, but lots of bass. Once I swapped to the 660s the open back feeling has grown on me and now closed backs feel off. I do have a set of regular AirPods for short travel and purely convenience. Can’t bring my open backs everywhere I go, those just stay at the desk.