I read on this forum that there are varying levels of campatibility between the oem iPod kit and the vast array of iPods available on the market. I have bought the kit, but am yet to fit it and then have it programmed into the COMAND system. As such I am going to buy an iPod for the car which will only be used in the car. I may well end up buying one from eBay but don't want to spend too much as obviously all I need it to do is hold 100-150 albums. Is there anywhere that shows compatibiltiy or is there a general rule of thumb as to which one to get? Thanks in advance.