I bought my son a Ninja several years ago, he mostly uses it to blend up his coffee in the morning. I then bought a food processor attachment because I make hummus, nut butters and laundry detergent. But, the food processor started making a funny noise  so I decided to buy a separate unit for my exclusive use. It was not much more money than buying parts for the other model and it has all the attachments I need for slicing, blending, mixing dough, etc. It is very powerful and not excessively noisy.