What is your Rainbow Road?

The same as you.

Along with liking both stages, I love both of the songs as well.
 
64 and Wii. I felt that 64 is just nostalgic while the Wii one held both challenge and fun.

7 was decent, but was pretty short and I dunno, just didn't seem that hard. SNES was okay but it was boring, and was annoying at times. Double Dash was fun, but it didn't give much.
 
Mario Kart 64's and Mario Kart 7's. I hated the one from Mario Kart Wii.
 
Mario Kart 7's one, I love the way it incorporates so many space elements.