My CD changer is starting to go in my 2000 ML430. I've searched the forums for possible head unit replacements but most seem to detail changing to a nav unit with DVD playback etc. All I'm really interested in is a basic unit that takes MP3 CD's. I'm not an audiophile and I'm also not interested in a nav unit or satellite radio or watching movies. I have seen that you can get a two DIN insert that would let me fix a single DIN unit into the space of the existing MCS. I've also seen that it can be difficult to get a new stereo that will work with the Bose amps etc in the truck. Does anyone have any advice on the subject. I'd like to get a replacement that would cost about the same or less than getting a new changer without the hassle of having to go into the back every time I wanted to change the CD's. Thanks in advance for any info or advice anyone has.