A closely matched premium-cinema comparison around 2,700 lumens, native 4K and 4K120 capability.
Both projectors move beyond entry-level premium projection with more light, more sophisticated optics and stronger processing. That makes room geometry and screen size more decisive than brand preference.
For a scope screen, verify memory behaviour, available shift and the actual throw position. For HDR, decide whether the projector will be used alone or with madVR/Lumagen, because external processing can change how much weight to place on internal tone mapping.
NZ800 leans into native contrast and 8K/e-shiftX; Projector 8 leans into Sony XR processing and its 70 mm ACF lens. Room, screen and personal image priorities should decide.
Send screen width, gain, throw distance, room finish and viewing priorities.