For those who want to juice wheatgrass and other tough, fibrous vegetables, the Green Star GS-2000 and GS-3000 (Est. $480) (the same model, but with more attachments) are favorably mentioned by professional reviewers more often than any other juicer. Green Star juicers extract juices by slowly squeezing produce through two gears. The user must force the produce through the gears, which requires more effort than most centrifugal juicers. This twin-gear system not only breaks down the tough fibers in wheatgrass but also extracts the maximum amount of juice from fruits and vegetables. One test of eight juicers found that the Green Star 2000 extracted more juice from carrots and spinach than any other model, leaving the pulp dry. In addition, these juicers can be used to make nut butters, baby food and even, with a special attachment, pasta. Experts say twin-gear juicers like the Green Star models take longer to produce juice than centrifugal ejection juicers like the Breville Juice Fountain Elite 800JEXL (*Est. $300) , but they are also quieter. Also, because they perform so many other tasks, the Green Star GS-2000 and the GS-3000 are more versatile. This versatility comes with a hefty price tag, and one review also found the GS-3000 tough to clean. In recent years, the Hurom Slow Juicer has gained much more popularity and is now the main competitor for the Green Star GS-2000. This masticating juicer can also handle tough wheatgrass and leafy vegetables, but is nearly $100 less expensive.
The Green Star GS-2000 was one of eight centrifugal and non-centrifugal juicers tested by retailer VitalityPlus.com. The Green Star GS-3000 is one of three recommended models at review site 3Luxe.com. It is also included in a test of five juicers conducted by The Wall Street Journal in 2003. On the website EatVeg.com, Green Star juicers in general are recommended for juicing wheatgrass.
Good Just over a dozen owners give the GS-2000 feedback on Amazon.com. Less-happy owners dislike how difficult the machine is to clean, but most say it is powerful, quiet and can handle tough grasses and leafy vegetables fairly easily. It earns an overall rating of 4 stars.
Review: Green Star Complete Juice Extractor GS-2000, Contributors to Amazon.com, As of October 2012
2. The Wall Street Journal
Good Although it's outdated, this is one of the least biased and most thorough reports we found. In a five-product roundup, Charles Passy concludes that there is no "one-size-fits-all juicer." The Green Star juicer is described as slow and not very easy to clean, but very efficient at juice extraction.
Review: A Juiced-Up New Year, Charles Passy, December 26, 2003
3. Vitality Plus
Good This retail website, which sells juicers, has conducted its own performance testing on eight models. The Green Star GS-2000 is the most efficient of all models tested at extracting juice from carrots and spinach, editors say. It is also one of the quietest models tested. Unfortunately, like many of these expert reviews, this test appears to be several years old and does not include some of the newer popular juicer models.
Review: The Vitality Plus Juice Extractor Test, Editors of VitalityPlus.com, Not Dated
4. Eat Veg
Fair This article discusses the practice of juice fasting. The author, a doctor, recommends Green Power juicers for juicing wheatgrass. However, all the models discussed in the article are also sold through the website, so the recommendation may be biased.
Review: The Healing Power of Juicing, Dr. Cynthia Foster, Not Dated