I do a lot of cooking which involves time consuming dicing of onions, peppers, celery and a variety of other vegetables.  With this chopper it is a breeze!  It saves me so much time in the kitchen and works super fast.  I also use it to make salsa, salad dressings, and anything that requires chopping or blending.  The 3 cup size is very convenient and you can choose from two speeds.  When you are finished you can rinse it off or pop it in the dishwasher.  I should have gotten one of these years ago!  Great product!