I have a 2002 E65. I need to replace the ASK and the AVT. I'm wondering if it is worthwhile for me to upgrade other electronics such as the CONTROL DISPLAY and the NAVIGATION (From CD to DVD) while I am at it. It seems from my research that the later model CONTROL DISPLAYS allow for more add-on options such as reverse camera and iPod integration. Does anybody have any input/experience with this and is it worthwhile? And finally, are there other options besides OEM parts which are available?