I know some have had no issues and it's working great but too many clearly are having issues , the going from working well to not working really irks me lol.
There are tens of thousands of these in the wild now - yet relatively few reported failures (less than 100? - a less than 1% failure rate.)Do you drive - be careful you may want to change your mind. Do you fly - check that aircraft out, you know a few have just disappeared! All in jest.
But maybe you need something more proven, and they do exist. Maybe a VaporShark or a Hanna Modz, and there are others.