I’ve always liked the Staples D 3-ring binders. They have a smooth mechanism the rings have always matched up when I’ve closed them and they had a nice pocket on the back of the front cover to stash things in. But now the pocket on the back of the cover has a “button fastener” on it. I was skeptical as to whether I would like that or not.. but after using it a bit I’ve found it to be an added asset to an already Great binder. Thanks for the improvement!