hey marlon, just finishing up some other work and can answer this one quickly. both are momentum indicators with different mathematical formulas. you will find the wm%r will react more quickly to price action based on the formula involved and the rsi more slowly. that is if both are set as i use them in their default setting.
you should really only have one momentum, one trend and one volume indicator on your chart. i have the additional momentum indicator because i know those two inside and out but it's not advised and if i had to drop one it would be the wm%r because more traders use the rsi so it's going to give better signals due to the 'self fulfilling prophecy' if you will.
traders can go with whatever indicators they like from the three categories listed, but only one per category is advised. i talk about this a bit in the ibox.
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