QUOTE(ldsgeek @ Oct 22 2013, 09:57 AM)
Not sure about where you are, but on this coast car alarms are considered an annoyance. Nobody will actually do any more than look in the general direction of the noise. Now if you get a pager alarm that my be more effective as you can respond personally, but just a horn alarm would be wasted money here.
I'm in California. I feel like what would be good is having the blinking light that says I've got more than just my club. That can be a deterrent on it's own, but doesn't require a real system. The noise in a garage would make someone think twice too though.