As an adult college student, I have bought binders (1 for every class) to keep my work organized. I buy the durable ones and they seem to hold up very well. The 2" work well for having to be carried around in a bag loaded with other books on a daily bases. They seem to hold up well on regular use and hold most of the stuff I need for a single class.
Any Avery brand binders are wonderful to use. I constantly am putting together programs and office presentations with such. In my personal time I use these for bill portfolios and things of that nature. The clear covers are perfect as well, for when I wish to customize any book covers. I will use these always!
My office uses these binders (in a variety of sizes) all the time for custom presentations and RFPs. I love that we can customize a cover page and even a spine. It does take a little technique to get the spines down into the length of the binder - practice makes perfect! The rings secure well so paper doesn't slide out, and the whole binder is an attractive, easy to use package. We use these with the custom index dividers (mainly the 5-tab) and love our Avery products!