I loved the varied sizes. I know the images all display food-like items but I wanted to store loose items without the bulky packaging it came. The hardest part, for me, was separating the containers when they arrived. They each came wrapped in individual plastic sleeves, stacked inside each other based on size, with the lids also in groups inside the containers. I could NOT pull them apart. I ended up taking a butter knife and inserting it between the containers to break the air seal and pulling them apart that way. Kid found me doing this and easily pulled the rear apart. I used all of them, so I don't know how they would store and how hard it would be to separate them again if stacked. I hand washed the lids to preserve the seal, and put the containers in the dishwasher. The tall ones had to go in the bottom rack and even though I forgot to turn off the heat drying feature, they did not warp. The lids are easy to close but make sure you hear the SNAP on all 4 sides; sometimes it would close but not snap and it wasn't air tight without that snap. Food Quality: I have only used it for individually wrapped human food but it's a really great size for the fridge door! It's a rectangle that tapers slightly at the bottom for the tall ones, which is great because then the little ones fit next to it and the lids don't take up more space! Love that the design takes this into account. I put the dog/cat treats in them and am really happy that they are air tight. Some of their treats carry an overwhelming smell. And since I was having a hard time closing the resealable bags the treats came in (side note: i can't securely close a ziploc bag unless it has a zipper, so this is a "Me-Specific Difficulty"), I decided to use these. Game Changer!!! I was able store the treats with the fancy labels and don't smell them! The cat and the dog recognize the snap sound so when they hear it, they run to me for a treat, regardless of what room I'm in. I think it's cute and have been filling empty, cleaned pill bottles with training treats to keep in my pocket as a reward. Pavlov Treats! <