An efficient design allows the Slowstar to crank out a high volume of juice within a small footprint of 6½ by 8 inches. The feed-tube opening is a relatively wide 2½ by 1½ inches—wider than the 1½-inch chute on the Omega J8004—which helps reduce the amount of vegetable prep you’ll have to do beforehand. The solid waste collects cleanly in a waste container that’s included. The Slowstar has a reverse button in the back in case you need to dislodge stuck vegetable matter, but I never needed to use it.
A twin-gear juicer such as one of those in the Tribest Greenstar series can extract the most juice from greens like kale, spinach, and wheatgrass, but isn’t good at juicing fruit. The juicers in this series are specialty machines usually used in professional juice bars; they’re also quite expensive. We did not test any twin-gear juicers for this review.
There are other features which give you convenience. A juicer that has a large feeding tube, for instance, means you can put in large chunks, enabling you to skip the tedious chore of chopping your produce into small pieces. A large disposal spout is also a good feature as large spouts do not easily get clogged up and have the added advantage of producing a higher volume of juice.
Another important consideration is where you plan to store your juicer and how easily you’ll want to access it. While horizontal-masticating juicers can churn out high volumes of juice, you may not have space for them. Plus, they tend to weigh more so tend to be difficult to move from closet to counter. The small footprint of vertical juicers is ideal for smaller kitchens with limited counter space and can often tuck under cabinets. Lightweight centrifugal models are perfect if you need to move your juicer from storage space to counter. Just make sure whatever model you pick can handle the volume of juice you plan to make: smaller juicers equal smaller amounts of juice per batch.