There are two main types of coffee grinders: blade and burr. Blade grinders work by chopping the beans with spinning blades, while burr grinders crush the beans between two abrasive surfaces. Many experts believe that burr grinders produce a more consistent and uniform grind, meaning that they may be able to extract more flavor from the beans. Conical burr grinders also tend to be quieter than other types of grinders. bHowever, they can be more expensive. blade grinders are less expensive and easier to find, but they may not produce as consistent of a grind. Ultimately, the best coffee grinder for you is the one that fits your needs and preferences.