I use index cards to track daily tasks and work out priority lists. But the larger 5 by 8 inch cards are harder to find and poor in quality when I do find them. Exacompta makes beautiful and useful cards, and they are the ONLY company that makes the large index cards with a grid. This style is my favorite tool and when it gets carried around and handled often, it matters that it be sturdy. Exacompta does not let me down. On the negative side, I work a lot with needle nose ball point pens to get lots of information on a card, and this paper does not take that tip well. It skips. So it will be back to a regular fine or medium point pen. Pencil does splendidly. On the very plus side is that my fine point fountain pens glide beautifully on this card, and I am happy to use them more, as well. I wouldn't mind it if they would make a white or ivory card along with the colors. Contrast matters when you look at small print. So glad I finally found a place to buy this product.