I have been using the Mini-Prep for a few years.  I like to use it for small jobs like chopping herbs, parmesan cheese, and for making pesto.  I haven't had any problems with processing parmesan cheese as one reviewer did.  The blade has two sides, a blunt side for processing hard items like parmesan cheese, chocolate, and coffee beans and a sharp side for processing soft items such as onions, garlic, meats, and mushrooms.  The sharp side is labeled sharp.  If you alternate between processing hard and soft items, you have to remember to check the position of the blade to make sure you are processing with the right side.  In addition, the processor has two speeds, HI & LO.  The LO speed is recommended for use with the sharp side of the blade and pulse action while the HI speed is recommended for use with the blunt side of the blade and continuous processing.  The Mini-Prep has a lot of kick to it for such a small appliance, and I have found it best to hold it steady with one hand, particularly when processing hard food items, because it will jump when powered on.