Of late, I have been facing issues with SPX order execution and fills. I understand SPX monthlies trade on the pit and SPX weeklys trade on hybrid exchange (simple options with less than 50 contracts go to eBook, simple options with more than 50 contracts go to the pit, complex options of all sizes go to the pit...). Order execution is one of the primary reasons I moved from the monthlies to weeklys. Now I am seriously thinking of moving /ES options from SPX options. Any thoughts or suggestions?