From my in home side by side comparisons, the Z9G offered a better all around PQ than my Z9D. Motion handled better on the Z9G. More depth & detail which can be credited to the 8K panel. Colors looked better on my Z9G which was calibrated by a certified calibrator. My Z9D was calibrated by Best Buy geek squad. And I’m sure the large 85” screen size had a big impact. The G just looked better all around. This upcoming Z9J seems to be the Z8H repackaged. Doesn’t have BMD and will most likely have around the same brightness level of the Z8H.