I have tested my Stock D3, at 19 GHs and 1145W..... its mined around 11 ONX (Onix), in 24h, at zpool.ca
What coin (x11) are you mining at what pool / profit per day it rewards ? , i think Nicehash is the best option atm.
You get no answers, is it? It is because no one shares any secret, because they are so desperate to make a little to recover their investment on D3 that included me, since Shitmain flooded the market.
I don't expect making so big business with this D3.... but just looking the best option for getting profit... atm 11 ONX per day... around 330 ONX per month at 0,50 $ per ONX its 165$, that cover electricty cost (0,14 cents per kW/h) and give a little profit !
P.D If ONX will goes up to 1$ per coin, profit will be higher