The next level is a blender that will blend it all up, not leaving anything to throw away. Thus more food, more nutrients and less waste.
Enter the BlendTec or Vitamix. Isn't competition great one company comes out with something awesome then another company comes out with a similar product but more awesome, but competitively priced with the less awesome product. The vicious cycle continues forever until we the consumer win.
Downside they cost $400
Will they do the job? If they can blend an IPAD they can definitely blend up kale.