Just got these today, ran them through the dishwasher and used one to cook green beans in the microwave. What I like good size selection, they are attractive, they stack VERY well (unusual for glass containers), the glass went through on bottom rack of dishwasher, lids on top rack. I didn’t remove the seal-rings and everything went through fine.  Food cooked great in micro. Have not tested in freezer or oven.  The side clips on the lids are a bit tricky, so I only clipped 2 of the 4 to microwave and it worked fine. I’m guessing they will get easier as the seal-rings get broken in. All in all I like these. Wish I could order more of just certain sizes.