I have an Omega 8003 which is the single auger version of the twin gear juicers. I researched a bunch and decided on this mainly because I juice greens. It does NOT do well with apples, but from what I read none of the really good juicers do. Apples are juiced better in centrifugal juicers, but at that high a speed you have significant oxidation and many of the enzymes are destroyed.
Maybe try some carrot/cucumber/celery juice? I guarantee that you'll love your green star! My favorite is ginger/parsley/cucumber.