>Which mario kart is the most fun if you play against the AI only?
Definitely not Mario Kart 64. Its rubberbanding racing AI is the fucking worst. Even if you take that huge Rainbow Road shortcut, they still magically catch up.
>Which mario kart has the best meta?
Definitely not Mario Kart Wii. Which should be renamed Mario Bike Wii. The fast bikes made the slow karts useless online.
>Favorite character? Favorite map?
Heavy characters like Bowser or Rosalina, on the heaviest kart. Large and in charge. My favorite tracks are those with lots of turns for me to chain my drifts together. Fun stuff.