To give you an idea of scale, our most recent meal for 3 (2+1leftover) was salmon steaks marinated then baked in the medium container, red potatoes and roasted veggies in the large container and greenbeans with almonds in the small one. We prepped, cooked, stored, and reheated in the same container! How did I function before these?!* The small one we also use as a sandwich box with space for a few carrots/celery on the side. We own two sets, not to mention the other Pyrex storage shapes and they are constantly cycled: in use, storage, washed. These rectangles nest and stack well. When microwaving, the lids don't warp as easily as the competing AH brand. We love that they're dishwasher safe. All the benefits of Pyrex are here... remember no stovetop or broiler use, so I'd be wary of smaller toasterovens since the elements are so close (eventhough the containers are low profile), but we have a large 6 slice toasteroven and haven't had a problem baking yet. We are a small family, but this set would be just as useful for a single person or a family 5+. Better prices can be found elsewhere, although this combination is hard to find in brick and mortar stores.
I recommend this product.