hey bud, dont just get an alarm, use other technics in conjunction with it.. just by a cheap one , with the basics, then put in a hidden kill switch for the fuel pump. so they dont take the car while your asleep or at the movies... you can do alot of stuff without spending all your wad on a good alarm when you dont need it to be that good...

for instance. buy an cheap alarm with all the basics. hook up the siren underneath the car not in the engine bay like most, then hook up a car horn and put it inside under the dash somewhere>> ( realize that the car theifs will need to be in the car to start they stealing,) and then hook up the kill switch on the fuel pump . so they cant steal the car....easy done in about 1-2 hours and it will only cost about 100.00
just my thouht thats all....and dont rely on the automatic kill switch on the alarms that can be bypassed easily......