1) They ain't what they used to be
What is considered vintage and how are vintage machines different than new ones? I've had mine for 25 years and never had any problem - that I know of. Maybe I'm unaware of what's out there - or is mine considered vintage? Now there's an idea I'd rather not accept!
Whirlpool bought Kitchenaid from Hobart in '86. From what I understand, the Hobart motor is far superior.
maybe they didn't run out of the hobart motors for a while. i do love the weight of the much older models