I upgraded to the NutriBullet Pro 900 and have been pleased with the power and speed when blending drinks, and smoothies. It does not leave "grit" in the smoothie when protein powder is added.
I bought this because I wore out my Magic Bullet. This would not chop all my fruit I used in a smoothie. If it had other blades it may have done the job. I returned the unit and bought a Ninja, worth the extra money.
We had given a daughter one of these a few years ago. She was a believer. I decided to "upgrade" my diet which was already pretty good. This certainly helps with each morning doing the vegetables, fruit, protein powder, chia and hemp seeds, coconut milk, etc. Quick and easy and performs as advertised!