What is the best Rainbow Road in the Mario kart series?

Wii Rainbow Road for sure just for its music.
3DS second place because its a planetary trip and as far as I know no mario kart track (as of 8 Deluxe's last BCP wave) that is a interplanetary adventure other then 3DS Rainbow Road. That track is unique.
Also, why the hell does DS Rainbow Road's music is similar to Wii Rainbow Road, and the intro is extremely similar, if not the same as Wii Rainbow Road?

By the way, for all of the tracks I mentioned, I am saying the original versions.

mario kart 64 made the n64 rainbow road long and it have 3 lap on a long track but in mario kart 8 they got n64 rainbow rode clean be it now have one lap

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why the heck does my personal favorite have to be so bad?

because it long in the mario kart 64 your opinon is also handle

the music is good though,so the original where the song lasts longer is better

GameBoy Advance Rainbow Road. Or 3DS Rainbow Road.

N64 and 3DS