I installed my own, but then again I used to install car audio and alarms for a living. I have an Autopage and I got it 4 years ago when I first bought my Suburban. Even after 4 yrs, no problems. And its badass, I can check the interior temp with my remote, All the same features as the high end viper alarms. And I've installed many DEI products. Viper, Python, Clifford, they are all good systems. Prestige and Code Alarm are good units as well. And if you are thinking about installing yourself, it depends on your experience in wiring. Its a whole nother animal compared to installing a radio and a amp. You need to tie into the computers, bypass the passlock system and interface with the doorlocks. Not an easy task at all if this is your first alarm install. But if you really want to tackle it, I can answer any questions for you.