I have a Code Alarm CA-640. It is an older model, I think I have had it for like 3 years or so. I think Audivox bought out Code Alarm so I don't know where you can get them. I haven't had any problems though( knock on wood ). The newer ones I have seen are nice. I think if I was going to get another one I would get a bigger name brand one like Viper. I paid around $400 with install and everything.