I use these large storage binders for keeping my music repertoire in alphabetical order for rapid access as needed. The covers have served me well throughout years of heavy use and still look as good as new. The rings and access levers have changed slightly throughout these years. I like the newer single longer lever for one-handed opening/closing. I prefer the older “pin in tube” ring closure to the newer wave-cut closure. The front paper insert and spine insert are important for distinguishing the binders. And the color of the covers helps too. The rubberized spine hinges are extremely comfortable and durable. I have not had a failure over many years. I use thinner binders for rehearsals and performances in black. I have added a choral notebook hand strap to the performance binders to help me securely hold them open for long periods in one hand and turn pages with the other.