system
A chat on subreddit /r/wallstreetbets
human
Oops my bad, meant to say SPY options*  
  
 So between SPY options and ES, given their difference in tick value, it seems like ES would be the no brainer?

gpt
If you're willing to risk that much yes. 
  
 10 SPY contracts = 2 /ES contracts = 1 SPX contract 
  
 If you're trading dozens of SPY contracts you should definitely consider something else. 
  
 EDIT:  Keep in mind that both SPY and /ES contracts settle physically.  1 SPY contract is 100 SPY shares, and 1 /ES contract is 1 /ES future.  /ES futures also have an 'expiry' and settle to cash.