Drink both of them often. Bolthouse Farms makes a drink called Green Goodness that has both of them in it. It's delicious. As to the health benefits, there are none that I can speak of but again I do not take them religiously. They are however classified as superfoods that are supposed to be incredibly good for your body.
I've been curious about getting into them more consistently too. Let me know if you hear anything good/bad or how your experience with them goes.