I just had the Viper 791xv installed in my xB2 with remote start and a proximity sensor. Wow! How did I ever live without remote start?! I love the fact that I can leave my car running, while I take the key with me and lock it. I will also be hooking up all my underglow and cold cathodes to the system. I would recommend this setup to anyone that is looking for a paging alarm system with remote start. I paid $350 for the alarm, sensor, and remote start installed. Not bad at all! This is definitely better than spending $1000+ on the Scion Security and remote start.