Reposting my impressions from the other thread.
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These showed up a day early on Saturday and I've been using them pretty heavily ever since. Around the house, walking around outside with a knit cap on, weight lifting at the gym, etc.
Honestly, they are kind of a revelation. Obviously the sound quality is not going to blow anyone away, but their light weight combined with the complete absence of any kind of wires has allowed me, for the first time ever, to be able to forget that I am wearing any kind of earphones at all. Just wireless sound into my ears. It's really amazing. I've used all kinds of Bluetooth earphones before, but these really made me realize just how annoying the presence of any kind of wire at all is and how much those wires contribute to the earphones coming or loose or falling out. Not once have these come close to falling from my ears, and I typically have terrible luck with earphones staying in, including Apples newest bundled-in earphones from recent years.
The design for these is just great, too. Hats off to whoever came up with the charging case holder design. Auto-pausing when you remove one from your ear is also just amazingly intuitive and has already come in handy a few times at work. They are certainly expensive, but as far as I'm aware there really is no alternative on the market. Truly an amazing life-improving device as far as I'm concerned.