This was a great buy. I must say, I really didn't want to buy one, but my chemistry professor insisted that we did...whatever. Seriously though, I'm glad I did, it kept all of my lab reports neat, and I didn't have to worry about anything. I did find it irritating sometimes when I forgot to put the plastic divider behind the page I was working on, because then my markings would go through 2-3 sheets, but that was my own fault.