Unironically I prefer Tour to the actual mainline titles. The gacha mechanics are kinda shitty of course, but the pace of the game feels so much better when:
1. Triple item boxes and the frenzy mechanic let you spam stuff
2. The races don't tend to take as long, just 2 laps each
3. Insane variety, like more than World due to all the variants on tracks
4. Very importantly the focus on "Score" makes every second of the race matter, you want to collect the coins and get the drifts even if you're already in 1st because score matters

That's on top of little things like the IRL locations being soul, and the variety in drivers/karts/gliders being unmatched (because it's a gacha but still). I was hoping they'd have a sidemode with the score system but alas.