I have the larger Pro Plus blender, which I use to make a daily protein shake.  That blender is pretty big and a pain to clean each day, so I thought I'd try this smaller version.  I made one protein shake (or tried to make) and then returned it.  I added frozen fruit and other ingredients to make a single serving shake - it was pretty full, but still under the line.  This blender did not even come close to pureeing the fruit or even mixing up the ingredients.  I had to immediately go back to my Pro Plus.  The blades are small and not serrated like the Pro Plus, so the shredding capability is way lower.  I don't see how anyone can make a shake or smoothie in this blender unless the size they are making is what I'd consider a half serving or less.  I still gave this two stars because I only tried the one thing in this blender - maybe it is better for other uses - but it failed so miserably at making a standard protein shake that I would probably not recommend trying this model.