I don't think any are really better than others. I do like a preference of my calcium to be more granulated rather than light powdery if that makes any sense. Some brands it does not stick to the food i am sprinkling it on. Also when I crush pure calcium pills it seems to be more like the semi granulated(or more course type brand of calcium). Cuddle bones work well too. I put them in with my little hatchings and they love it.