I bought this a month ago, and I am so glad I did. It has helped me to make soups that I couldn't make in the smaller one due to the capacity, and I was surprised to discover that it made the use of it much quieter than while using the smaller one.
I love the vitamix, My husband and I use it every day, however, using a lot of green veggies etc has discolored the container over a period of 9 months. Have you thought of providing a glass container?