The best juicers extract as much liquid as possible from fruits and vegetables, leaving behind very little pulp. Machines that leave large amounts of very moist pulp just aren’t doing their job. The same is true for froth. Every juicer makes some froth, but you don't want inches of bubbles – you want a machine that gives you the most juice for your money.
Noise level: The machinery inside of a juicer can be a little noisy at times, and that's problematic if you're planning on juicing early in the morning before work. You wouldn't, after all, want to wake up the rest of the family while juicing. In general, high-speed juicers with a centrifugal design are the noisiest, while masticating juicers are quieter.
Kuvings released the C7000 in 2017. Kohler said this model has improved features compared with the Kuvings Whole Slow Juicer (B6000), which didn’t impress us in testing. From watching a comparison review of the C7000 and the Whole Slow Juicer, we see that the C7000 has a new funnel for easily feeding produce, doesn’t produce as much pulp, and has a more recessed auger for easier cleaning compared with its predecessor. But the C7000 still spins faster than our pick at 60 rpm, and is more expensive at the time of writing. And although Kuvings juicers boast a 3-inch feed tube that, in theory, can accept whole fruit, most apples in the store are much bigger than three inches in diameter, so that’s a wash. When we tested the Whole Slow Juicer, it didn’t hold a candle to the juice quality from Tribest or Omega machines. The Kuvings Silent Juicer was also an underperformer, giving us over an ounce less of green juice than the Slowstar. The resulting juice was also unpleasantly pulpy.
If you're serious about juicing, it's best to get a juicer that fits nicely on your kitchen counter so you can leave it out rather than having to haul it out of a cupboard. That means paying close attention to the dimensions and even the length of the electrical cord. You don't want to buy a juicer that looks great in your kitchen but doesn't have a cord that reaches the outlet.
Accessories include a 2-liter pulp container that makes it easy to discard unwanted pulp and a 1-quart juice pitcher for collecting juice to serve at the breakfast table or to store in the refrigerator for later. The unit's removable parts clean up easily by hand or in the dishwasher, and a cleaning brush comes included. Housed in die cast and stainless steel, the juice extractor measures approximately 15-2/5 by 11-4/5 by 19 inches.
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.
The major disadvantages of this type of machine are the noise, heat, and oxidation resulted from their great speed. This oxidation can cause a loss in nutrients in the juice, thus reducing the juice quality and fridge life. Besides, while they’re good for thick, hard, crunchy fruits and veggies, these juicers are much less efficient in handling leafy greens.
While its blade chamber is super effective for firm fruits and veggies like carrots or apples, it doesn’t work that well on separated thin leaves. It spins and sends most of the leaves into the pulp collector before even shredding them. You can create some juice by packing the leaves together, but it still wastes too much of the veggies to consider it worth the effort.