I own the CFP301, which is the flagship of Ninja's coffeemakers, but it is big, and I wanted something for every day when I just make coffee for myself, but can still use my own coffee ground. That's where the PB051 come in handy. I have used for about a week since it was delivered, and I already love it. My CFP301 will remain in my house when I make coffee for a bigger crowd or when my husband's coffeemaker (not a Ninja) dies (which might be soon as it makes weird noises already). It is also nice to have small coffeemaker when you go on a trip and want to make your own coffee. You never know what coffeemakers you find in vacation places.