Pump and piston espresso machines require a more expensive espresso burr grinder that allows you to modulate the fineness of the grind to match the pressure exerted by the brewing water. For committed espresso fanatics and owners of home pump or piston machines, these sturdy, reliable grinders are a necessity. For the general coffee enthusiast, they can grind coffee for all brewing needs. Most of the machines in this class are strong, well-made appliances that cost from $100 to $300.
