In preparing for the exam, this kind of course between two people is almost the same, just saying that it depends on which teacher you like, which teacher you like to listen to, the style of the teacher's lecture, and then which teacher you follow. And now there is a trial reading audition, and this course has a certain number of class hours for audition. You can choose which one is better according to yourself.
You can study by yourself between preparation. But we must keep up with the plan and rhythm, and have our own arrangements and plans.