What car to choose?

That is a good question, but also a bad question at the same time up to some degree. Why? Pretty simple, not all cars handle the same way, and while its a good idea to try to avoid the worst cars, simply because using cars that barely accelerate and handle properly can really hamper your experience overall, but at the same time picking the most overpowered cars just because they're the best even though your driving skills are bad, you are not really going to get any good time splits any time soon, so our personal opinion on the matter is to simply pick a car you feel comfortable with. Although it is a good idea to pick a car and grind points with just that one car, changing the car you're using is a good way to break with the eventual monotony of using the same car over and over again.