ok as above wanting to know what would be the best alarm as im just about to upgrade a few things so wanting the best system......?
I have the Clifford IG950, with IntelliStart and CallGuard. It's a ***** to fit around the Audi immobiliser, and the place that fitted mine never really got it properly finished.
Sends you a text message when the alarm goes off, and tells you which sensor has been activated. Also starts the car with the push of a button while keeping it locked and alarmed, and immobilised if you press the clutch or brake pedal. Does other clever stuff like starting the car automatically if the battery is running flat.
Thing is, if someone wants to break into your car and nick stuff, they will no matter what alarm you've got. S3s aren't difficult to break into but the standard immobilsers aren't that bad so they won't get too far anyway. Not really worth upgrading IMO.