Is there such a thing? Well, I think so, and that’s why I devote my time to all metal vintage sewing machines. There is a BIG difference between a “vintage” sewing machine, which I (and others) define as 20 years old or older, true all metal machines in the domestic sewing machine market had all but disappeared around 1972 (with a few exceptions).
For a good discussion on the topic of the “best” vintage sewing machine, I would urge you to visit the site below:
Professionally Restored Vintage Fine Quality Sewing Machines 