Summary: The Whistler XTR-475 Radar Detector is one of the best choice overall. I made my purchase after comparing the price, quality, reviews, and simplicity over other units. I found this unit was practical for my driving needs. It covers a wide range of the most common used methods by law enforcement in my area. I'm alerted early enough to slow down, and often well before I see them. I don't drive wide open everywhere and do obey the speed limit most of the time.