There are two types of coffee grinders: the blade and burr. The blade grinder uses a rotating metal blade to cut up the coffee beans. It is similar to a blender. Blade grinders are more consistent than burr ones and are therefore less expensive. The blades can also produce a lot heat, which could affect the taste of your coffee beans. Burr grinders offer a better quality option. They are also more costly. You can choose between conical or wheel burr grinders. They crush the coffee beans into the desired size and do not chop them. Because they work a bit more smoothly, are quieter and are slower than wheel burrs, conical burrs can be considered better. Both blade grinders and burr grinders are available in a variety of styles, so if you have the budget to go with them both, it is worth looking into.