I own these.
I really like them. At that price point, the sound is good, the mic is good, and battery life is good. They are lacking bass (obviously), but the BT connection so far has been solid. They are a little awkward to fit, but once you get them dialed they are pretty secure. That said, I wouldn't do anything too active in them; get a sport oriented set if you want to really go crazy while jamming out.
The magnetic connection is a cool idea but they don't hold together as well as I had hoped.
The purported noise-cancelling is nothing to write home about. I've tried out the Bose QC series models a few times, and you wouldn't even notice these have noise cancellation if you are familiar with QC at all.
All in all, though, these are my go-to earbuds. I use them all day at work, on planes, and on walks across town. They're worth the price, though. The next BT headset I'll buy is that Bose QC, but that's like $300 price jump. Worth it, but too rich for my blood right now