I am in need of a good car alarm for my truck. I currently have nothing but a keyless entry. Since I know little about alarm systems, I need your help. I hear Viper is a good alarm system. Basically I need an alarm that will go off when: weight is added/subtracted from bed, windows break, engine kill switch, tilting of vehicle, many shock sensors, and something that will trigger an alarm if someone picks the lock or uses another key in my truck. I was thinking of the Viper 5002, but am open to sudjestions. Price limit is $400 without installation.