Anyone have a car alarm system to recommend ? I am looking at getting a paging system and am looking at the ones made by Autopage like this http://www.sonicelectronix.com/item_19715_AutoPage+C3+RS-665-2W+---NEW+with+1+LCD+Transmitter---.html or http://www.buy.com/prod/astra-777-mini-alarm-with-one-2-way-lcd-transmitter/q/loc/111/90128217.html any input would be helpful . Thanks