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.
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.
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 also keep my rices and legumes in bamboo boxes.
Are you in the US? I don’t think I’ve seen these around.