Escort. They are only as good as the driver. They are not fool proof, nor are they guaranteed to work. Especially with laser detection...
Isn't there a game the companies play with them? The Cops come out with a gun that gets past the detectors and then the companies put out one that detects it. Then they get the Cops one that gets by those so they can make another to detect it. Therefore, always make money from either consumers or Cops. Or is this just a conspiracy theory I picked up somewhere?