I drive 30,000 miles/year and I have had one speeding ticket in the last decade (had a red light ticket last December and beat it with an online traffic attorney). I use the Escort 9500ix, like JTP, as well as the Bell RX65, as tamathumper. A bit off topic, I have driven several hundred miles with them both plugged in, and they alert at equal distance but 9500ix has less false alarms. Anyhow, I drive fast on the freeways (80 to 90) and the radar detectors have saved me countless times. Around town I am much more subdued, so much so that I don't even bother turning the detectors them on. In the freeways, I am alert, and hit the brakes (safely) when they go off. I find they work best at night, because you can't see the constabulary hiding with their guns "loaded".
Interesting story is that the one speeding ticket I did get was in a white Buick! It was about 7 years ago, One of my cars at the time was a Speed Yellow '03 911 and I had it in the shop for service. The dealer (still under warranty), gave me a white Buick as a loaner. I was actually driving back to pick it up, doing 50 mph, which was the speed limit but I was in a construction zone! I didn't notice because I was on the phone with a client. The cop got me, along with about 10 other poor saps, with laser. When he handed me the ticket, I joked with him that I was on my way to pick up my yellow Porsche. He got a kick out of that one.