As in each category, Premium means best quality. The main difference between Nitro and the Premium Method Mixes lies in their composition. The Premium Method Mixes are even more complex containing even more additives. Yet, there is something else, Premium Method Mixes break down more slowly once submerged in water thus these ground feeds will keep fish close to the feeding spot for a longer period of time. It is worth mixing it with half or whole boilies and pellets of various dissolve times when catapulted to the feeding spot to get an irresistibly effective feeding material.