I would give the Smart Spin a full 10 if there was a way to add larger containers. Don't get me wrong, the idea is a fantastic one with all the containers out there today to help with storing leftovers or taking a quick snack along with you. It's wonderful that there is ONE size for the lid instead of trying to find the one that matches to container you found to store a little bit of left-over lasagna in. I bought one for my mom, and then one for myself, since she could not be the only one with one! My mom didn't really care for it. I guess she prefers searching for lids or keeping containers and lids together to stack up and take up extra space instead of using something that takes up less space and doesn't require you stack lids with their containers in your cabinet. So, I got her, too, now! Love it!! Lots of containers with little space to put them! It's great!! Now, to make this a better product, the could at least make a set where there are two or three different spinners with different sized containers, or shapes, to fit more needs. If there was one set that had short and longer rectangular shapes for cookies or `slices of cake, that would be fantastic! Or, there could be a set with round containers where squares just won't work. Again, this is a great product, a fabulous idea, and it is something that has lasted for me for about 7 years or so. If there is someone out there that is part of the team that created this product, please consider adding to the collection! Just a wishful thought.