I find /ES futures options to be more liquid. Especially after hours. 1.00 b/a which immediately becomes .50 once you place your order. But you can actually get filled mid-market. I’ve always been a commodity and futures guys so maybe I’m biased but I really prefer /ES  mini to any of the SP products. Same 1256 60/40 tax treatment as the bigs and never a “Daytrading rule”. 

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