I am very new to option so any recommendation or opinion will be appreciated it!
The SPX options have a large notional value. 100x the Index. Today the SPX is trading at 3643 (+/-) so the notional value is, roughly, $364,000.00. The SPY is one tenth the size of the SP is trading at 364 with a notional value of $36,400.00. One is an index, one is an ETF. Both contracts trade during regular market hours (i.e. 8:30am-3:00pm CT.) The SPX options have some AM expirations so you have to be careful of those.
I trade the /ES options. Vertical credit spreads only. And have been profitable doing so. I do not trade the underlying futures contracts. One thing about options on futures is to remember you are trading a derivative of a derivative. You need to understand the underlying, when the contracts expire, what contracts the options are trading against, settlement procedures, etc. Visit the CME's website for more information. The trading fees are higher than equity options. My broker charges me $0.90 per option per leg. Plus the exchange and NFA fees add up to another $1.10. One advantage to the /ES options is that they (like many other futures options) trade almost 23 hours a day. The /ES option begin their trading day at 6:00PM (ET) until 4:15PM the next day. With a halt from 4:15 to 4:30 and from 5:00PM until 6:00PM (ET.) I can start trading at 6:00PM Sunday evening which sometimes is an advantage when the Asian or European markets are going crazy I can be in the "game" long before the SPX or SPY traders can get in Monday morning. Ditto in the evening after hours.
Since you are "very new" to options you may want to start out with the ETF products like the SPY, or perhaps the IWM, EEM, QQQ, etc. The SPY is the volume leader normally and you can trade dollar wide spreads without putting all that much equity at risk. In any case you need to understand just what exactly you are trading. What is the product, its notional value, when and where it trades, what the exchange's product specifications are, settlement procedures, etc. I would not recommend that you start with the /ES options until you've learned about the underlying futures contracts (i.e. the E-Mini S&P 500 futures) and the options on thso contracts.
just my thoughts.
Best and good trading.