i bought one of these. If you love your car like i do , they deserve the best. The feature i love best about this alarm you can start the car with an i phone. Havent got mine installed yet though.

http://www.ebay.com.au/itm/NEW-VIPER...item3a6634e69d

Honestly alarms only slow down a crook. All it takes is smash window pop the hood and kick the out the siren,take out the positive lead and then play around with the steering column . If it has a immobiliser all you have to do is find it and un plug a few wires and the computer wont know its there. Lol i sound like a crook it just a few things and electrician told me. He told me to get this and if installed properly it will be lethal . The for an example wire the alarm to a separate battery , put the siren down low where it cant be tampered with.