Build quality and performance
Performance was good if you didn't do the Gansky Challenge and put a pan of au gratin potatoes or a bowl of rice in there and let it run through the heated dry ;-)
It's filterless, with a macerator to chew-up the bits of food that are larger than small Volkswagens. Clogged wash arm holes are a frequent phenomenon, so get good at pre-scraping. A properly scraped load, even if very soiled, will likely come clean.
These machines need copious amounts of hot water to perform well.
Depending on the wash arm configuration, they generate a lot of pressure, so no putting plastics in the bottom rack. And sometimes, you'll find them flipped over in the top rack as well.
A major issue due to the pump intake is foreign objects like glass or olive pits, which enter the pump and break vanes off the impeller(s). The unbalanced impeller vibrates and eventually compromises the carbon-porcelain seal, causing a leak off the motor.
You'll frequently find broken glass and/or bits of the impeller lodged inside the wash arms. The impellers and seal come as a kit and are very easy to install. These machines are simple to work on, especially in the later units that had the two-piece clamp ring under the sump, rather than the bolt-in pump module.
Build quality is typical D&M, which is to say "your mileage may vary." The porcelain is thin and easily compromised, and rusted sumps are de rigueur for these units. Rack rusting is also a frequent problem. The detergent dispensers frequently break, and allow the covered compartment to hang ajar. WCI addressed this in the later polypropylene machines by completely scrapping this type of dispenser design.
All that said, if you find one in minty shape, it will likely serve you well. They wash well, hold lots of dishes, and sound nice when they run.