DEI products is a quality product that you install and pratically never see it come back. Prestige/Audiovox is very simular reliability as DEI. Hoping that since Code got taken over by Audiovox they would change over the Code units to something better. An example that Clifford got bought out from DEI, now the Clifford models (Matrix) still looks like a Clifford. The remotes, siren, brain, LED and shock sensor looks the same but all the internals are DEI.
I installed many, many Codes, most of them are still working fine and never seen them return back yet but in the long run you don't know whats going to happen next. Another alarm system that also problems are Ungo (but thats a another story).