I pretty much favor the one I happen to be driving. I love the Stingers acceleration but cruising the highway in the K900 with the Lexicon sound system is so comfy nice. The left/right blind spot camera view on the gauge cluster also makes for a fine safety feature on the interstate. I paid $47K (and some change) for the 2020 AWD GT2 and $52K (and some change) for the 2020 K900.While part is that the Stinger should have gotten a nicer interior from the start (no reason for the F/L Cadenza to have the better interior), part of it is also how nice the K900's interior happens to be.
Not that far off from the G90's interior and even better in some respect to the pre-F/L G90 (which didn't get a leather wrapped center console until the F/L); in addition, the K900 got the full digital gauge cluster whereas the NA spec F/L G90 only got the digital screen btwn the analog gauges.
Which one do you enjoy driving more or does it depend on your mood?
I don't know how they can offer sooooooooo much more car for just $5K.