It's simple. If you don't play at 4K, always get Intel (i5,i7,i9).
If you wanna stream and other stuff too, get a Ryzen.
If you wanna game and also stream but mostly care about gaming, i7.
Also for your specific GPU EVEN IF YOU OC THE 2700X YOU WILL GET JUST UNDER 144 FPS. So yea, clearly get a 8600k if you only want to game. 8700k if you want to also do other stuff, or just overall have your PC work better while doing more than just gaming.
If you prefer go for 9600k or 9700k for the same reasons.
View: https://youtu.be/DJzWj1jJwMU?t=425
stop pushing AMD down people's throat for "better value" if that value is below what he wants.