If you searched for "meal prep containers," you probably saw those boring (but cheaper) black containers. The kind some takeout companies use to put your food in? And then you probably saw these and maybe thought they'd be higher quality.
They're not. They're literally EXACTLY the same as the black containers, just with colors.
I just received them today, so admittedly I can't tell you how well they'll hold up in the dishwasher, but straight out of the packaging they're a disappointment. To be fair, what I REALLY want is glass, but what I can *afford* right now is plastic. I was at least hoping these would be a tougher plastic, but they're very thin and flimsy. I don't see them holding up for very long, and to be clear, I don't abuse my containers!
Anyway, I'd still recommend going with glass over these. Heck, just looking for thicker plastic would probably work. But if you don't mind the flimsy plastic, just save yourself a few bucks and get the plain old black ones.