Jae,
I'm shooting on the Blackmagic Pocket for almost 3 years now, what I found when shooting raw is that exposing for ISO 400 gives me the best results in most circumstances, Exposing for ISO 800 makes sense in bright / high key circumstances to protect highlights but only then.
For very low key / low light scenes, exposing for ISO 200 usually gave me the best results as for detail/noise/colors.