Very happy with it. The sound quality is excellent, but let's be honest--the sound quality is almost always excellent these days. (The most common criticism I hear of wireless earbuds and headsets is that the battery eventually fails, not that the sound quality is poor.) So the question is how well this will stand up. For that, I'll have to trust the Sony brand.
There are some nice little bonuses, like NFC capability (makes pairing a breeze) and the built-in mic, which I didn't even know about or expect.