Higher notional value, cash settlement with no assignment risk are some advantages. If you hold naked shorts then ES has lower margin requirements. Index might have some tax advantage in the USA too...
Thanks but I found AMP futures charge (for micro) 0.62$ all inclusive per side so 1.24$ round trip and for ES you are right round trip is 3.80$ but for spx round trip at tastytrade is 1.65x2=3.30.
IMO, trading US Markets can be an "illusion of choice" FTSE Options make trading relatively simple (but not easy) - Large nominal value £80k - Cash Settled - Monthly Expiries Only (excl Flex) - Phone Brokers available
One phone broker to my knowledge and yes that's how I've been doing it (badly) since the last century. I agree it's fine for trading as it's European style liquid, sometimes and has yet to do a 6% rise in one day, as the S&P did just as I had opened a TT account. Cheers.