I use this to make smoothies and am disappointed with one of the blades which leaks underneath. I at times also have had a very hard time unscrewing the blade fr the cup after processing. I have found that if you don't screw it tight enough to begin with then the liquid leaks from the blade seal to the cup and floods the well.
I bought this to replace my Nutribullet that someone gave me almost 3yrs. ago. It is finally starting to give up. The Nutribullet Pro is more powerful and I love the larger cup as I tend to overstuff the smaller one.