Is anyone using an aftermarket anti theft alarm system? A recent camping trip and conversation with @rmerron got me thinking that maybe the factory ignition disabler, that comes with most newer cars, isn't enough. Most of us put a lot of expensive aftermarket parts on our rigs and I'm thinking more coverage like glass breakage, tilt/lift and shaking would be in order. I've looked into Clifford, Python and Viper and these offer the above plus GPS and the ability to access the system with a smart phone, for an additional fee. I would appreciate any opinions or comments, especially if anyone is using a system.