I Picked up a first generation one of those in 1997 and have been using it ever since. That design is incredibly versatile and comfortable to use. Its a variation on a very successful theme, the Oliver 159, that was so popular in school shops before and after WWII. The modern Jet 1640 and 1840 are downgrade budget versions of that lathe design. While they are pretty good lathes for what they are, they are not the same as the Powermatic 3520B,