Beginning in model year 2004, MB Tele-Matics systems were vastly improved with regards to reliability. IMHO, the biggest improvement has been in the area of the integrated phone. Bluetooth technology has worked wonders! The NAVI system still leaves something to be desired, but it will still get you where you're going. Most other problems can be easily fixed with improved software. The CD changer is the weakest link in the system, since it has moving parts, but I don't see them fail very often.

If you want to add a nice MB to your line-up, the CL is a great choice.