Whistlers work well, The key to a radar detector is making sure it is set up pointing down the road at the correct line of site and learning your detector another words the lesser expensive ones are all gonna get false readings every once in a while but if you pay attention to it you will learn it and get less tickets by using it, I say less because you will probably still get tickets no matter what but if I catch ten of them on my radar detector before they catch me on there radar then my radar detector has been verry good to me and paid for itself. Shit for $20 take the whistler and if you dont like it sell it to some one else for $20