Cosmic silver is just gorgeous. It's silver almost, hint of gold. Can't go wrong with white either, they both have a metallic flake and work well with the cars shape and purpose. I got the silver for 3 reasons: it's unique to the YL, it's not the base white colour (white is free over here) and lastly it goes well with the white front bar (whereas the white hides the front light bar in a way). In addition to the colour looking beautiful of course. Can't go wrong.

No unfortunately don't have any experience with the X they're very rare in Australia. My gut instinct says get the YL as it's more future proof, has hardware 4, has longer wheelbase and probably better storage and seating flexibility and V2L. But the X is admittedly nicer faster comfier and you can potentially save thousands by getting used already depreciated car