Radio/tape Cd Player problems of the 2003 Mercedes Benz S Class

This auto's command (communications) system (radio/cass/cell phone/navigation system) has failed, intermittantly eleven times over the past 2 years. Since I purchased this auto for monthly trips between maine and georgia, I really need safe and consistent communications and navigation systems to operate properly. I've now lost faith in the safe operation of this vehicle; purchased expressly for safe, long distance, all-weather, & dependable trips of 2,600 miles each month. While the factory has attempted to repair/replace the command system ten times, it has now failed for the eleventh time! this problem has been additionally documented in the past three issues of the star: Mercedes Benz owners club magazine.