I used to use Radar detectors many years ago. To tell you how long ago,my first detector was the ESCORT - the highest ranking model in it's day. Then, I upgraded to the PASSPORT and lastly the battery powered SOLO. All made by Cincinnatti microwave, who I think is the best radar detector maker along with Valentine 1.
Anyhow - I haven't used one in 15 years. With the cops using laser now, it's so easy to spot them and just change a lane and they lose focus on you. Being alert by scanning down the road, not having a front plate (they focus on this and it reflects the signal back) and using reasonable lane discipline and not driving recklessly and you will be fine. I drive fast, but smartly.
So I don't think they are necessary.
Anyhow - I haven't used one in 15 years. With the cops using laser now, it's so easy to spot them and just change a lane and they lose focus on you. Being alert by scanning down the road, not having a front plate (they focus on this and it reflects the signal back) and using reasonable lane discipline and not driving recklessly and you will be fine. I drive fast, but smartly.
So I don't think they are necessary.