I have been using a Valentine one for a few years now per a recommendation from a motor head buddy of mine. After hard wiring it in, its become a part of the car now, and I feel naked when driving a car without one.
Anyway, this past weekend on a trip to Iowa City, I was heading on 80, and 88, and I got my rear end saved big time thanks to my Valentine one!
First instance was a laser, a local cop was sitting parked on the middle of an overpass hitting the traffic westbound. I was picking up laser scatter for quite some distance, so I slowed down from 80 to 65 and then finally he hit me dead on...thankfully I was already at the posted limit. Second time I was getting faint Ka pickup about a quarter of a mile ahead of a bridge...again slowed down, and lo and behold there was a state trooper parked in the culvert between the separated highway just after a small bridge...what a hiding spot...
There was some guy who blew right past me with...shockingly...a Cobra on his windshield. Which by the way was giving me false alerts every time we passed each other....I am really starting to dislike cobra for making poorly engineered products.