I bought the Nutri Ninja when I decided I couldn’t stand lumpy green smoothies anymore. Initially I intended to get the Nutri Bullet because my Mom has one but after much research I found the Nutri Ninja to be a better option for me. The Nutri Ninja was more powerful at 900 watts and the two cups 18oz and 24oz were all I needed or had space for. After 4 months I can say I love my Nutri Ninja. My smoothies have never been tastier. Even my kids drink them now. Frozen fruits and green veggies? No problem for this gem!