I have one, but not on a company ride nor anything I drive at high speed. I'm really pleased with the performance for the cost. The magnet seems no weaker than any other, and it has stayed attached on some rough forest roads. It won't rotate past 360 and there is no return to a parking location, but at that price point i still think it's an excellent value. It lives in my POV.
I figured that they would come out with a LED model as soon as i got mine, but that will up the price into their full-performance line. For open country - plains, deserts and mountains, it is probably a little weak, but for urban, suburban or multiple generation forests with a lot of understory I'd consider it adequate, certainly enough for routine tasks like spotting house numbers or checking power lines.
I haven't tried the ultimate test of a spotlight - whether it will turn a streetlight off.