Being a nerd, I find things which most people wouldn't find troubling very troubling. The Sony and Bose headphones that I see have several major problems. Sony WH-1000XM2 & Bose QC 35: They are only bluetooth. How am I supposed to play them on my Fiio x5 ii? Bose QC 25: The QC 25 is wired, but it takes AAA batteries, and they burn out every 30 hours It would be nice if the Sony WH-1000XM2 or Bose QC 35 had a wired option for non bluetooth audio devices, with the option for batteries if I need them if the charge runs out. Is there no compromise in the noise cancelling headphone market? I have wanted to have noise cancelling headphones to drown out the intolerable humming of the bus I take on my way to school, and the droning of the chattering girls who sit around 30 minutes before class starts whose inane conversations make my brain hurt.