I used to install remote starters and alarms for almost 10 years. Of all the brands I installed, the DEI brands were the best. This would include Viper, Python, Sidewinder, Clifford, etc.
However, the key to any remote starter, is the installation... Don't take it to the kids at Best Buy or Circuit City. Find a reputable shop that has installers with real experience.
I see you are in Wisconsin. (thats where I'm from originally) If you dont mind traveling a bit. Kartunes in South Milwaukee and Car-Feteria in Milwaukee are some of the best shops in Southeastern Wisconsin. Both shops would take great care of your vehicle.