2-Roller Grain Mill
Want the most consistent results when all grain brewing? Your crush size makes a huge difference; getting your own mill eliminates inconsistencies between batches that are related to efficiency. Each brewing system will also suit a different grist lauterability.
Brew in the bag systems do very well with a fine crush while three tier systems and 3-in-1 systems do better with a coarser crush to allow sparge water to naturally flow through the grain bed.