I have a Crime Guard 750i6. It works really well when you find a place to mount the shock sensor. The only think I can think of that would be a problem is leaving the trunk light off, it'll go off randomly. It's not much of an issue though. I like that the key chain goes off if you're within a quarter mile from the car, and chirps any time the alarm is activated or deactivated, too. Has the kill switch, of course. I would recommend it.