My kids are constantly asking me to take them to get smoothies so the Ninja Nutri-Blender Pro with Auto-iQ, 1100-Watt, Personal Blender has become an essential product in our home. It blends and mixes in as little as 3 seconds. The cups are very sturdy and heavy duty compared to others I have tried. The lids also make it easy so I don't have to transfer to another cup. I absolutely love this blender. Ninja did not disappoint.