What circuits or cups do you like or dislike?

You understand.
It's hard for me to say what circuit or cup I like the most. I like all Mario Circuits, Peach Circuit, Luigi Circuit, Sunset Wilds, all Donut Plains Circuits, GBA Rainbow Road, Waluigi Pinball etc.
I don't like Koopa Beach 2 (that water section is really annoying) and really dislike DS Rainbow Road (it looks awesome and its theme song is beautiful, but this track is really narrow).

I dont really like Rainbow Road, and I like Waluigi Pinball
EDIT : Its not the track I like more than others

I Dislike Most Of The GBA Tracks In This Game Because They Feel Veeeeeery Unfinished.
I Also Dislike The SNES Bowser Castles In This Game For The Same Reason.
And My Favorite Is Probably SNES Mario Circuit 2

Im with you there. I like Vanilla lake 1 and Ghost valley courses, but i can't stand the narrow track of ds rainbow road. Way too narrow, and that first turn has a boost that sends me flying off the track every time.

In my opinion DS Rainbow Road is the worst Mario Kart PC track. I like how it looks. I love it's theme song. I hate how narrow this circuit is. Anyway I like DS Rainbow Road theme in quick track builder.