GREEN COFFEE BEAN ARABICA GREEN COFFEE BEAN
Arabicas are high grown (usually 3000 feet and up) with a much wider range of taste and, depending on the handling, are considered to be much better in quality.
Most specialty coffee shops use exclusively Arabica beans (You know, the stuff in the fancy valve bags) with the possible exception of the addition of Robustas in some espresso blends.
So with the above in mind, you see that the world's best coffee is the Arabica.
