an alarm is prety annoying i gotta admit, but it has helped me alot. i have a deck in my civic and w/o the alarm, my window got busted like 5 times within 3 months, which pisses me off cause i always keep my faceplate at home. its always a trip to the junkyard when that happens. after i bought and installed an alarm system, its been 2 years and no windows are broken . it paid for itself, but i do gotta admit sometimes when ur lying in bed at night and a freakin alarm goes off for like 10 minutes, u just want to go out and blow the car up or something.