while these compustar and alladin systems sound great and all they seem pretty complex, If it can tell you anything from someone jacking with your door to someone pissing on your tire, then there will be more wires and sensors for every little feature you add, which can lead to major headaches for functions that sound nice to talk about at dinner parties but may not get much real world use. so figure out what you need and what you will use, and go from there.