The grinder grinds fast. It doesn't overall grind as fine as I'd like. However, this is because the food at the top doesn't get pushed down to the bottom to grind more. That's why the food at the bottom grinds well but the top doesn't come out as finely ground. Cleaning is pretty simple. Though, it's hard to clean beneath the blades and kind of difficult to clean the rim at the top of the plastic cover/lid that prevents the food from spilling out of the bladed, metal cup. This is because the rim gets too close to the edge of the lid, so there's narrow space to get between with soap to clean out possible gunk.
Overall, the grinder works as intended and powerfully. However, some design elements make the grinder inconvenient.