I have used Escort radar detectors for over 20 years, and have generally been very happy. But the 8500 models "laser" malfuctioned almost right after one year.
Thinking that I had a bad one, I bought a different unit, because this unit should have lasted longer, for the price I paid.
Now I learn, that this quite a "common problem" and that I am not alone.
When I called Escort, all they want is sell me a new one, or pay $80.00 for repair, while insisting that interference is a problem, and that they have had no other complaints. The rep. was very blunt calling me an expert on detectors, at which point I told him goodbey.
Customer service is out the door.