Moving once -ok, twice -also ok. But again??? Have you ever tried to _really_ compare the Hosters before you move? This really looks like you are far from being proffesional.
There was such a device some time (read years) ago and it was absolutely senseless. There are existing several warnings from experts, that these devices have two effects: a) The driver tends to drive when already sleepy ("the device will protect me") and b) if waken up by such a device the period of sleeping was long enough to loose control of the vehicle. The best/cheap solution: Sleep more and let somebody else drive when it is unavoidable to drive.