At higher ranks, players often stick with the Octane or Fennec due to their versatility. The Dominus and Breakout are also popular for players who specialize in ground dribbles, flicks, and air dribbles. The Batmobile (Plank hitbox) is a niche choice for players who excel at precise redirects and powerful shots.
Ultimately, even pros will switch between cars based on personal preference or even just for a change of pace. Don't feel locked into one car; experiment and find what suits your evolving playstyle.