Lowest commissions for /ES futures & options?

Hi
May I know which broker offers the lowest commissions for /ES futures and options? Size is around 150 - 250 contracts for options each month (both ways).

IB charges $1.42 for /ES options and $4.02 per round turn for futures, exchange fees included.

Mirus charges $2.10 for futures per round turn, but that is before exchange fees.

Thanks.
 
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