How problematic will electronics be on the early build C6? What to do, what to do?

If the following is any indication: 2002+ 7 Series vs. 2004+ A8, 2004+ A8 vs. 2004+ 5 Series and 2002+ 7 Series vs. 2004+ 5 Series, the 2005 C6 A6s (perhaps even the early build ones) should not be too much of a problem. The 2002+ 7 Series has been significantly more problematic than the 2004+ 5 Series and 2004+ A8. The 2004+ 5 Series has been just as problematic as or more problematic than the 2004+ A8. And all the problems with the 2004 A8 are primarily (but NOT completely) limited to examples built 9-03 and prior. Examples of the 2004 A8 built 10-03 and later have generally been trouble free. Hope this helps.

iDrive is Windows-based, and MMI is Linux-based. For embedded hardware, I'll take Linux, thank you very much. And I'm a Windows guy, when it comes to my desktop.