No question, the Technics EPC 100MK4, a conventional MM with super low tip mass and all the details done right. It has more bandwidth than any MC with flat bandwidth to 80 kHz and a resonance of 100 kHz. It wasn't officially imported into America but in the 80s many of the most famous mixing engineers used it.
The problem with selling it was it would have been a $500 MM by a middle hi fi company Technics when exotic MCs had taken over the market and Technics knew no one would buy it.