Are all momentum indicators, Aroon varies because it uses time not volume. But all basicaly looking for the same thing. Chaikin is probably the most popular but On bal vol gives a cool chart. Aroon I never use, because if I want tic by tic I watch level II and instint takes over. Red - Green - Red - Green - click -, you know.
Learn them all, I don't play momentum, so I am not the best to praise one over the other.
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