I bought an alarm for my truck but I ended up selling the truck to my dad and he's giving me his eclipse. I have the Autopage 850LCD, but I have never heard of it until the day I bought it. I stopped by a few alarm shops and they said it looked like a quality unit, but they had never installed one. You can program the alarm to keep the vehicle running like a turbo timer, and it has a carjack mode and starter disable.
Here's a link to all the features: http://www.autopageusa.com/Products/2Way/rs850.htm

I needed one with the 2way paging and the only other one I could find was audiovox and it looked kinda cheap. Best buy had some but they would only sell them with installation, so I went to the ghetto and bought the autopage.