You may think the higher the RPM the better, but when it comes to juice the reverse is true. Higher RPM means more heat and foam, which result in greater oxidization and less nutrients in your glass and it kills the enzymes which is the main & most important ingredient to our body.
You want the lowest RPM possible to juice effectively and retain the essential anti-aging nutrients in your drink.
The very best juicers are powerful slower speed Auger / masticating type juicer that “crushes“ fruits and vegetables. Since there is no heat generated, all of the enzymes are preserved for a fresh and 'live' tasting juice, releasing more nutrients from the cell walls and have been shown to produce juice with a higher nutritional content, gives you more fiber, enzymes, vitamins and trace minerals.
The companies that make this juicers are: Lexen, Samson, Green power, Green star, Twin health, Champion, Miracle, Omega and Tribest.