The one "downside" is you do need adequate cushion if you're taking it on the go say for lunch or to a dinner gathering, but even a towel wrapped around suffice.
If you want recommendations, the Ikea 365+ glass containers are fantastic and very cheap. Again avoiding the "plastic lid" variant they have for extra measure.
Plastic lid is normally fine, plastics leech at high temperatures, you arent normally heating food with the lid on. .Even eith a fully steel container you need a bit of soft material lile silicone to ensure waterproof seal
I beg to differ. The IKEA 365+ non-glass containers are fantastic. The glass ones don’t stack properly and tend to have little glass shards break off when unstacking them. I can imagine a v2 being better.
I also keep my rices and legumes in bamboo boxes.
Are you in the US? I don’t think I’ve seen these around.