I need your help

So im new to all the oled stuff and need your help guys. i am mostly a fps competitive gamer and play games like csgo, overwatch, tarkov, rust and other titles( hence why im going 360hz) . The thing is on rare occasion i like to actually play some story games. whats the difference between the msi mag and mpg? should i wait for the alienware one to get to the same price? should i wait for the next prime day coming in October to see the deals? or do i even need to or should do oled since my main games are competitive fps with the side of story games?