I want to juice strawberries, blackberries, blueberries and tomatoes. . I need advice on the Greenlife or Champion or Omega 8001.

Actually I do not reccomend a juicer for the above fruits. They are VERY HARD to juice (they are very soft) with ANY juicer we sell. (ie: alot of pulp, and not much juice). A better plan would be to BLEND them up into a smoothie. I hope this helps. Of the three units above, the champion would work best, but as I said, I DO NOT reccomend juicing them, they are very soft, and yield will not be that great.