DISCLAIMER: I have done very little grading in ACES_cg in flame, mainly just tweaks of stuff.
However I have done a looot of grading in Resolve in ACES_cct and in Resolve it is a night and day difference between ACES_cg and cct. The highlight compression (where the highlights compress at the top of the scope instead of marching off a cliff) and even dark compression you get grading in cct is a joy to work with. I’ve been tempted to just convert everything to cct but I still have my comp/flame instinct to not convert/f with things that don’t actually need to be touched.