I've been a Valentine owner for 9 days now, and this past weekend I finally got 4 confirmed LEO detections. The last one was a potentially ticket-saving alert. My Valentine went off full scale with the arrow pointing behind. I slowed down and sure enough, an unmarked city cop eventually passed by me while I was doing the 55 limit. I took a poor quality photo with my cell phone camera, but this one certainly goes into my gadget scrapbook.
Anyone looking to buy a radar detector, go with the directional arrows. You won't regret it.