I have an original C series or TNC machine. I was always envious of the new low stature containers and when I noticed there was a 1.4l container available for my C series, I bought it. I have to say, it is nowhere near the quality of my original container. The clear plastic handle is quite thin and the lid is made from a hard plastic. This renders it completely inflexible and hard to fit.

I just recently purchased a new Pro Series 750. Immediately I realized the included 2L container would provide much more capacity than needed so I purchased the .9 and 1.4L containers. The .9L container fits rather nicely on the base (inside the fingers) with just a little play as compared to the 2L. It has a quality feel to it, thick plastic, stable handle, fairly confident seal on the lid. The 48oz however has a lot of play and spins roughly 1/4" on the base when power is applied. Also, the plastic handle is thinner so it has a little play to it as well. It is designed to fit over top of the fingers on the base much like the 2L however the plastic base of the container is more a rounded square and overshoots the fingers on the motor base I was hoping it would seat as nicely as the 2L and have the same quality feel however it doesn't. I don't understand why the 1.4L container doesn't use the same rounded corner concave square base as the 2L. For the price of the container I expect a better design.

I’ve had my vitamix for prob 7 years now, used for a few month period 4-5 times a week until I got frustrated that it would jam and would spin trying to make a simple smoothie. Constantly having to remove lid which was a pain and stir. Used plenty of liquid. Did not overfill. Pitcher quality is poor. Cloudy and stopped leaving it on counter because looked dirty. I agree with others about the plastic quality…finally just bought a nicer looking Bullet Blender.