What are the practical differences between the Manual Stainless Wheatgrass Juicer by Back to Basics and the Miracle MJ-550ss electric wheatgrass juicer in terms of quality wheatgrass? Which one do you recommend?

I have not done any studies of the quality of wheatgrass juice produced by the juicers. I would think both produce a fine quality. They both work on the same priciple, but one has an electric motor connected to it. The electric model is a low rpm machine, and the hand crank machine operates at the rpm that one can turn the handle. I have never been one for hand cranking, and find that many people are "put" off by hand cranking in this "automated" society. So I believe the electric models are more used, since they are easier to use. I personally own a electric wheatgrass juicer, which I would reccomend.