I have used these binders in two sizes for keeping yearly income tax receipts and documents for 3 years. I open and close the binders at least daily often several times per day. The rings operate smoothly each time and over time. I use numbered dividers and sheet protectors to stuff receipts inside and the binders hold the mismatched shapes nicely. The rubber edges keep them from sliding off my desk even when I am annoyed by the amount of work it takes to keep track of the paper associated with paying income taxes!
i like the color selection and size selection at Staples. Binders do not last for entire school year with daily or every day use and travel back and forth to school.
I use these in my office to house our personnel policies and similar documents. We even have used them at home to house the school items we want to save as they come home in our kids' backpacks. The binders look great and are very durable.