A bowl set only earns its spot in the cabinet if every piece in it can do more than one job, because nobody has the room to store a bowl that only ever holds cereal. I count on mine for rice, for soup, for the fruit nobody eats until it is about to go soft, for the masa when I am mixing in a hurry. If a set only makes sense for breakfast, it is going to sit at the back of the shelf while you reach for the same two bowls over and over, and that is not a set, that is clutter with a theme.
Stick to plain colors and finishes if you want the set to last past year one, because the glossy white or the warm cream will still work when your taste shifts, and the patterned ones date faster than you expect, even the ones you swore you'd never tire of. A soft stoneware glaze in sand or clay color sits next to almost anything already in your cabinet, which matters more than it sounds because most of us are not replacing every plate and mug at once, we are adding bowls to a kitchen that already has a personality. Pick them up in the shop and feel the weight. A bowl that feels hollow and light will chip the first time it meets a stone countertop, and a rim that is too thin will crack in the dishwasher rack within a few months, no matter how careful you are with it.
Where these sets fall short is scale. Most bowl sets top out around six or eight pieces in two sizes, which is fine for a weeknight but useless the day you host and need twelve matching bowls for soup, you will end up pulling out a mismatched extra from the back of a cupboard and hoping nobody notices. They also do not solve for serving, a bowl set gives you individual portions, not something you set down in the middle of the table for people to help themselves, so don't expect one to cover both jobs.
They work best in kitchens that cook often but for small numbers, apartments, starter houses, the two person household that eats at the counter more than the table. Rented places benefit especially, since a good plain set travels well from kitchen to kitchen and doesn't tie you to a landlord's beige. Check the base before you buy, run a finger around the unglazed foot ring, if it's rough enough to scratch a wood table, you'll want a cloth under it every single time.