Purchased as a late Christmas gift to my loud roommate. It's Plague Times, and we need time away from each other that we can't get without assistance. In a fit of frugality and mild spite, I purchased a pair of noise-cancelling PXC-550-IIs for my own self. I wanted Roomie to feel valued, but also mildly slighted in a way they couldn't call me out on.This either backfired, or worked perfectly, based on how valid the spite was: see, I like theirs just as much as mine.The BT350s have sound quality nearly equivalent to the PXC-550-II (better in some ranges!), at a third or less of the price.- Sure, no noise-cancelling, but great natural occlusion.- Sure, slightly cheaper materials and a bit less adjustable, but still very comfortable, and noticeably lighter, especially for a power listener who will really appreciate the weight difference.- Sure, no fancy touch controls, but the analog controls are pleasantly tactile and arguably superior for it.* ABSURDLY UNDER-MARKETED BATTERY. THIS SUCKER LASTS LIKE 40 HOURS, NOT 30 AS ADVERTISED.And hey, you can always slap an extra hundo down for 450s if you want the noise-cancelling and 3.5 cable, right? I promise, you're not missing as much as you think you are; Sennheiser ANC is solid and serviceable, and it's a marked improvement...but it's not Sony or Bose.I could safely recommend the BT-350s to literally anyone, as long as they're not too feature-sensitive. Though I will admit, if you want audio quality so pristine that it requires a cable connection, this is assuredly not your first pick. For my money, , though, these are the best sound-for-price Bluetooth headphones out there now that they've dropped back a gen or two. They punch far above their weight.