Got to use it on my 1,000 mile trek this week. Very nice performance and range and it alerted me well in advance of the cops I encountered. So much so, that when it beeped, they were far away and out of sight before they even appeared. I saw on their website where either Popular Mechanics or Popular Science gave it some 13 mile range (which I find hard to believe, but still it does have a nice range alert).
While in Chico, CA I was talking to the cook at the hotel's restaurant during breakfast. He got nabbed for a mere 3 mph over (68 in a 65 MPH zone on Hwy. 99) and it cost him $300 with court fees added on. The bigger fish was that he did a rolling stop right-turn at a signal and swung into a mini-market for coffee on his way to the restaurant at 5 AM and a city cop met him on the way out. Ticket was $370 and it's posted on traffic signs in Chico, but all the extra court fees they added on cost him $900. Ouch!
Guess the state will bail itself out soon at those rates.