I tried asking basically the same question today and got no replies, so I’m here to bump your question.
I’m personally having some issues adjusting to the color on the OLED but maybe I’m just a weirdo. It’s too saturated for me and overly warm so I’ve been messing with the settings. Currently at 7000k and the color vibrance at about 25%.
Best of luck to us both. Right now I have it set halfway between Native and SRGB and 6500K
I believe that was the default that valve is setting.
Most (if not all) games are standardized to use SRGB. Basically, the setting would cap the color gamut to be the proper one (SRGB.) If you set it to the middle or native setting, it would be using DCI-P3, which means colors would be more saturated than intended.
Considering the OLED itself is past DCI-P3 coverage (like 110%,) the middle setting may be capping it to 100% DCI-P3 and the native does the full 110%. That’s just speculation…I don’t think there is any clear indication until valve says something or someone tests it.
Which is best?
Whichever subjectively looks best to you.
The best is whatever your preference is. sRGB just means colour standard, and native is what the OLED looks like when you forgo the standard. Neither are bad, just pick whatever you like and you shouldn’t regret it.
Native is more saturated; sRGB is less saturated.