Yes, it would seem like a worth-while investment... one of the ONLY things that has always bugged me about the ergonomics of the X5 is the tape deck behind the Nav screen. I have the 6-disc CD changer in the trunk, but I've always liked the ability to pop in a CD whenever I feel like it without having to pull over and walk around to the trunk, and having a player right behind you would allow you to do that. Not to mention, it will more than likely play Mp3 CD's... oh, and DVDs too!