Technology is advancing at an alarming pace. Many of us in the market for auto sound systems have been more than surprised at many of the choices on the market today. Sound systems have gone far beyond the simple tuners of days past and are incorporating other features into the sound system as well. Today you can find all kinds of bells and whistles with price tags to match. It would be very easy to spend two or three thousand dollars in the purchase and installation of a very nice auto sound system in your car, truck, or SUV. Most of us, however, would do just as well with a simple three hundred dollar sound system and would be unlikely to use many of the features that the higher price sound systems offer. That being said, if you plan to be in the market for an auto sound system, a DVD players/entertainment system, an MP3 player, a CD player, and/or a navigation system for your vehicle, then you might want to select one of the more feature rich auto systems that are available on the m...