my point is that in this -250 to +250 zone, the price is more reflective of market behavior, and price momentum weighted indicators, oscillators, and higher freq trending idicators have more relevence; ie: rsi, and the ppo at your settings. they are more likely to be accurate here. so i would just go with
if bull - stay long. if bear- stay with price > 10MA.
other issue is with vto 28 rs buy in the triple nasi negative area. many of the big hit drawdowns occured here. john murphy and mclellans say that major reversals come from low nasi levels, probably -500 to -1500 - so logically the rsi should be better in this area, with the -250 to -500 zone tough for sustainable rsi 28 based reversals. atleast in theory.
thx
st