ok lets start with the lower end alarms.DEI feels like being cheap and just having there name on it and having the shock sensor built into the brain. what does that do you ask?
when you have the shock sensor in the alarm brain you have to make the brain easy to access to change the sensor if you have to. now keep in mind this is for the basic features. so what happens when you have an alarm that is easy to access. means its easy to disable. if you can find the brain no problem then what stops you from unplugging it.
now with audiovox or prestige alarms they all come with seperate shock sensors. so you can have the brain locted in a completely different place. there remotes i think look alot better also.
with the remote start alarms like the viper 791 and prestige 996a.
they are similar except the remote is ugly as hell on the viper. and it only comes with one remote. where as the prestige comes with a 2way and a 1 way remote so you have a back up incase you loose or break the other one. the replacement for the viper is $150. msrp.
and the DEI has a relay module that you have to hook up for the remote start and the starter kill.
The prestige has everything built in and you can hook up the start kill and hide it in a different location.
the prestige remote and the viper remote have about the same range so that is fine.
the prestige has a clock on it, parking timer, temperature in the car, remote start countdown and you can disable the shock sensor.
the viper does not tell you how long your car is remote started for. and it doesnt have any of the other features that the prestige remote has. also its an ugly 2d model of the car.
with the prestige depending on your climate you can have your car remote start when the temp hits a certain range to make it easier for you car. so in really cold climates it can remote start to keep the engine warm.
now some of the features that the prestige has might be pointless to you, but in reality you actually getting more features for the price you are paying for.
and at BB we sell the audiovox ax900 same thing as the 996a. for like 323 installed. and the viper is around 399-450 installed.
so in reality your actually paying for there name.
so from an installers point of view that installs both alarms is that a good enough explanation for you??