i think it dosent matter on the brand. they all do the same shii. the diffrence is on the installation. i used to work at a stero shop installing alarms. you can have the top of the line alarm installed by a 2 year old and some guyu is going to steal your car. or have a piece of shii alarm that was installed by a real pro and a theif wouldn't know how to bypass the alarm. for instance on m/t cars i dont put a starter kill. i put a kill some where else so that you cant start it.! i.e focc just push start the dyamn car. but if you cut the power to other stuff you cant do crap.! just my 2 cents!!