I'm late on the thread here... I too have the Breville 510XL Ikon 900. It's efficient and rather easy to clean, but if I had to do it again I would not buy a centrifugal juicer. It's an effective way to get juice, but a less effective way to yield both quantity and quality of juice. As a consolation I just bought myself a hand powered masticating juicer for my greens.
There is a secondary solution to the Norwalk (even recommended by the Gerson Institute), and that's to get a Champion juicer to grind the produce and then a separate Welles hydraulic press to squeeze it. It will run you $7-800 but it is still less than the Norwalk!
*tip: you can add vitamin C powder to reduce oxidation if you are gonna save some for consumption later in the day.
I am working up to a long juice fast, which I want to do before my surgery to be in optimal health going in. If you are considering juice fasting, it's imperative that you also include a regimen like coffee enemas to help move the toxins out of your body so the nutrients can move in for healing!
I've primarily treated my injuries thus far naturally/holistically so if anyone has any questions about supplements and or natural healing I'm happy to offer input!
Jules