Miles.
Beamsplitter
Actually that line was not in jest. Don literally hates the M5 - "it's the most overengineered camera ever produced"; he's said he will no longer work on them, but if he gets one in he won't turn it away. As I recall he charges $455 for a CLA on an M5.
Keep in mind though - and I have it on good authority - that Don Goldberg is on track to retire in about four years!
He sure does make a lot of sacrifices for us, then!
Only 4 years? Yikes! Looks like I need to make sure all my dream mods have been done on my M's before he hangs it up.