What is the best firmware for a S9 pro miner?

What is the best?

I have used the original firmware by Antminer S9
Then EMCD firmware.
Then Sigmaboost.
Next trying Braiins OS+.

Is the info out on the best yet?

Help me mine gooder! :wink:

INeed Money

There is hiveOS too I think that goes up to 20ths for the s9.