I had seen a lot of good feedback on the JETech ones, but ordered from Amazon and was pretty disappointed. Overall the feel is pretty nice, but the magnetic clasp on mine was scuffed on arrival. Pretty badly, at that.
Granted, I didn't expect a whole lot from a $13 band vs the $199 asking price for the real deal. And having said that, the folks at JETech reached out to me and offered a replacement after seeing a photo. So I'm pretty pleased with their service if nothing else. I'll report back on the replacement once it arrives.