Good Security Systems??

DooDooBrown

Hey all,
I am writing this to gain some info from some of you that may know about good aftermarket security systems for cars... My girlfriend and I parked at a hotel last night, we go outside this AM to find they racked in her window, stole a 700 dollar purse, drivers license, medications, cash, etc.... (Before all of you start talking about why she had a purse in her car, I know, it was stupid, we have already had a conversation about that...). THANK GOD my Z was not touched, even though it was right by her car. I am assuming the thiefs didn't touch my baby because I really didn't have anything out, other than a sweat shirt, and a GPS cord (on the ground, dont think they saw it). Needless to say, the security system failed to go off, I am assuming the scum bag just racked the window and crawled in through the window. It made me realize how easily some systems can be overcome... So, I was wondering if anyone had any info on security systems, their prices, or how good the stock one on the Z is, and any type of recommendations for both me and her, think we are gonna buy two at one time!
Thanks!
Cheers!