Hi,
The best way to find out is to buy a bunch of them, and take them apart. I did exactly that on my journey to becoming a manufacturer, and it is my honest opinion that the 1019 is the pick of the litter. I didn't buy every one of the different models, maybe six or seven. Anyway, the 1019 has the best build level of those I did buy. Its weakness is the spindle bearing because it was made for a stack spindle with the option to use a single play spindle. Anyway, the 1019 lacks the accuracy and dynamics of a really, really high-end deck, but she is a reasonably musical old girl who can deliver a fair amount of enjoyment.
Win