Of course this hasn't a thing to do with miles, but it certainly involves buzzing. I'm going crazy on CO's humming 777s. I like the Bose model noise-reducing headphones, but (1) they're big, and carry-on allowances from LGW are strict, and (2) they're expensive. Does anyone have experience with the Sony earbud-model that sells for between $150 and $200? I'd appreciate help from someone who can compare these to the Bose set. In particular, do the earbuds fall out easily, or are they snug? What's the size of the unit and battery life like? Any info is appreciated.