it doesnt matter if u got a alarm or not IF THE THIEF WANTS IT THEYLL GET IT. they use tow trucks now days to steal the cars. i dont know of the brands but i know u do need a alarm with a tilt sensor atleast and like rangcrx u need kill switches for those thiefs that dont got tow trucks to steal it. think like a criminal when gettin alarms. they can also short ur power to ur car with a hammer and screw driver without getting in ur car at all so u need a backup battery for your alarm so it dont happen. LOWJACK IS A MUST. i recommend viper (its overrated a lil but worth it) cuz for like 600 u get EVERYTHING lowjack tilt sensor u can even go online yourself and lets say u let ur boy take ur car to the store or something u go online log in and set ur car not to go over a certain speed and when it passes that speed it calls u and lets u know. theres alot of shit about viper thats a plus but i think its a lil overrated cuz there is others that are way better and cheaper.