50/200 is standard but... — 10MA and 20MA 30MA is good for very short term but i find them less reliable when they do a golden cross on the 200MA. This means, i dont think they are good in the medium--longer sense (months).

21/50 moving average combo

Bloomberg terminal — Nothing beats a Bloomberg terminal. If you have one, or can afford one, its absolutely awesome for getting information in one place.

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