I am with Securtek and so far it's ok for the purpose it serves. I agree that I think that the deterrent of signs is probably the biggest factor in preventing a burglary. There is no company out there that is going to respond fast enough to do sweet eff A about a home invasion or a robbery. That being said though, it's true that the reduction in insurance does pay for the service. Plus I like having a loud annoying alarm that will at least alert my neighbours to the home invasioners offering indignities to my body. And being able to hear when someone has come home early is handy.