S-Luke!!!!! End of discussion! haha.
It would be easier to give you tips if you could specify your current set up. Character card levels. Riding pet. Summon pet.Â
As of this time S-Luke is still the best~
I would lean more toward S-Chloe, S-Kylie, or maybe S-Leo. Â S-Leo and S-Kylie would rely heavily on magnet during fevers, but I think most of the points that you'll earn past the 2000 meter mark tend to be from fevers or winged stars. Â Generally there are too many obstacles preventing you from stomping monsters or collecting stars. Â As a result, they become targets of opportunity and generally don't help much to your final score.
The reason why I don't lump S-Luke in is because the rarity of items as you go further through the course. Â Without the items, Luke loses a lot of point potential. Â That said, you can use the Hippogryph or the Nine-tailed Fox to keep the point boosts but it requires that you wean yourself off of the dragon (i.e. you have to learn not to make any mistakes)
Chloe is the most consistent in her scores, the item reliant characters like Lily, Luke, Scarlet, Leo lose their shine at the 6k m mark unless they hv nine tailed or hippogryph and also Lily's magic star spawn ability doesn't work with the item spawn from the nine tailed and hippo which sux :( she would've rocked if so