im not sure myself which is now better but i bet the 470s will fall hard in price ..... too much downsides for me on AMD.... more Wattage (u need a "better" PSU), runs hotter, probably less worth if u try to sell it in %, less efficient per card so u need more systems but the future will tell us :)

i also thought its better to wait till vega while i bought the 1070s but 2 months is "nearly" the ROI time so ... :)

i think the profitablity is just "too high" right now ... more people getting into till its not worth it or nearly not worth it anymore so just the ones with low electricity can survive but maybe the coin prices are going more up but im not sure with this tho