I love my Vitamix and thought this would be a great accessory for making smaller batches and sauces, particularly when I'm making a few different things at once and don't want to empty and clean the container. This design is far more cumbersome, and doesn't produce the same results. Because the jar is upside-down, there's no tamper function. Food gets stuck and you need to unscrew, stir, and re-blend multiple times. This is especially annoying because the jar needs to be screwed in very tightly to avoid seeping out everywhere (though this happens anyway). I was not able to get things to blend as smoothly as in my regular container, even after blending multiple times. I really regret getting this as it serves no function besides wasting cabinet space. I don't even want to give it away because it will just become a burden on someone else. I wish I'd purchased a small, regular-design container instead.