G80 is pretty neat. Looks sporty enough outside and comfy enough inside.
G90 is less neat. Looks plain boring outside but at least still ocmfy enough inside.
I wouldn't want to actually own either one though. Depreciation on Korean econoboxes is already bad enough I can't imagine the depreciation on Korean luxury cars that MSRP above $40k.
Also there's no attention to detail. Drove a Genesis/G80 a few months ago. The instrument cluster, all the buttons, the infotainment software and graphics, the beeps and chimes... all the same between the $15k Elantra, $25k Sonata and the double/triple price G80.
Not even Toyota and Lexus do that shit anymore.