Im looking at several local options for a remote start and would appreciate advice. Brands and installed prices are: Crimestopper 2016-$760, Viper 791-$500, Excalibur Al-2000-$500. Viper is at Best Buy and rest are from car audio shops. I am leaning toward the Excalibur because of the shop. I have (and love) an 08 LE CC with all options. Would I lose the option where the drivers seat retracts when you open the door? I've read all previous threads on remote starters. Thanks.