The first plate set I owned was a twelve piece box set from a discount store, bought the week I moved into my first apartment because I needed something, anything, to eat off of that night. They were so thin you could practically see light through them, and within a year half of them had hairline cracks from nothing more dramatic than the dishwasher. What that taught me is that a plate set is not really about the plates, it is about the edges. Thin rims chip. Thin rims crack. That is the whole lesson, and it took me a stack of chipped dinner plates to learn it.
A well made set tells you what it is the moment you pick one up. There is some weight to it, not heavy exactly, but substantial, and the glaze feels smooth and even right to the edge rather than thin and shiny like it was sprayed on in a hurry. Run a finger around the rim. If it is sharp or feels slightly unfinished, that plate is going to chip the first time it meets the inside of a cabinet. Stoneware and porcelain both hold up fine, stoneware tends to be a little more forgiving of being dropped, porcelain looks nicer but punishes you for clumsiness. Check the bottom too, a good foot ring, the little raised edge the plate actually stands on, means it won't scratch your table or wobble on an uneven counter. Stacking matters more than people admit, if the plates nest cleanly without a gap you will actually use the cabinet space you have, if they wobble and clatter every time you reach for one, that is a daily annoyance for as long as you own them.
Where a set earns its spot depends on how you actually eat. A smaller household does fine with a simple four or six person set in one neutral color, easy to replace a single broken piece years later without the whole set looking mismatched. Bigger households and anyone who hosts regularly benefit from mixed sizes, a set with actual side plates and bowls instead of just dinner plates stacked in different diameters. Older buildings with narrow cabinets, mine included, make shallow stacking a real consideration, not just a nice to have. And honestly, a plate that goes straight from oven to table to dishwasher without drama is worth more over a year of actual dinners than one that photographs beautifully and chips by March.
When it arrives, unwrap one piece at a time and check for the glaze pooling unevenly near the rim, that is usually a sign the whole batch was rushed. Measure your largest cabinet shelf height before you order, not after.