What is the difference between green life and green power? What is the fruit adjusting knob? Why does the Green Life have a 3 year longer warranty?

The green life is basically the same as the green power, less the pasta maker and mochi attachment (available additionally for $60). The Green Life has a 5 year warranty on the unit (2yrs on the gears and motor), and the Green Power has a 2 year warranty. The gears used in each model are identical. The both have outlet adjusting knobs. The fruit attachment takes place of the outlet adjusting knob so you don't have to "manually" adjust the outlet adjusting knob when juicing fruit. The Green Life has a longer warranty than the green power because Green Life came out at the same time as the Omega 8000 which has a 5 year warranty. The manufacturer did this to remain competitive. I believe the Green Life to be a better built machine than the Green Power.