I have a Vitamix Explorian Series E320 that came with a low-profile 64-ounce container. This is great for large families or people who want to make big batches. However, without much experimentation, it's a little difficult to eyeball how many ingredients are needed to make a single-serving size in this particular container. Sometimes I just want to make a quick 16-ounce smoothie, and I found myself being too generous with the ingredients and making a 32-ounce smoothie instead! This is why I did my research and purchased the 32-ounce container ($128.95) with a mini-tamper ($10.08).When the 32-ounce container arrived, I switched it out with the 64-ounce container and placed it on the Vitamix blender. It was considerably smaller. Also, the original tamper that came with the Vitamix would totally hit the blades of the smaller container, so definitely make the wise purchase of the mini-tamper as well. Another difference I noticed is that the blades are longer in the 64-ounce container verses the 32-ounce container. I was worried that it wouldn't blend as well..During my experimentation with the smaller container, I found it was a lot easier to eyeball how many ingredients were needed to make a single-serving. My first smoothie was a perfect 16-ounces (half of the container). It blended flawlessly with the help of the mini-tamper to push the ingredients down into the blade. My worries were eliminated of the blades not performing up to par with the larger ones in the 64-ounce container. Afterwards, I rinsed the container out, filled it halfway with water, added a drop of soap, blended on high for a minute, and the container, lid, and tamper washed itself. The Vitamix functioned as intended even with the smaller container.If you find yourself wanting to make smaller portions in your Vitamix, just drop the money and purchase the 32-ounce container and the mini-tamper. It will save water consumption for cleaning over time, and it's a lot easier to determine the size and quantity of your end product. It can also be used to make enough for a 2nd person. I have stored the 64-ounce container and low-profile tamper in my cupboard for occasions when I want to use the Vitamix for more than 2 people at a time.