We're fixing our house after a flood and have found these sheets necessary to put in order our clippings from magazines as well as photos of the projects along with the contractor's estimates plus my notes from phone conversations. The sheets are easy to fill and to pull things out of. I can't stack them outside of the binder though as they slide everywhere. There used to be a kind that didn't slip & slide so much but I can't find those any longer.
I use these protectors constantly to store work for my job as a magazine editor. Then after publication they protect the issues and makes it easy to keep in a binder contributing to my "portfolio." The price fit my budget nicely too.