I don't use my BIA very often, but when I need it I'm glad I have it. I've used it for mini-books, 8x8 albums, etc. I'll be using it for my Christmas/December Daily that I'm using a Fancy Pants Brag Book because the orginal coils got bent, plus I wanted to rearrange the pages to what I wanted.
I even used it to make a super simple calendar last year--I found a cheap calendar that had tear--off pages, but I didn't want that so I used the BIA to bind it so I could flip the pages each month. Some day I'll use it to bind a paperback cookbook that fell apart (after I left it on a crockpot that was warm...steamed the glue apart!) but I haven't yet because that involves punching all of the pages...and I'd rather be scrapping!