I play this game over 2 years.
after beat the AI IN-10 level by arcade mode, I strongly feel ABSOLUTELY nureal of the AI. Its's too crazy.
As I know the best simulative of the real tennis is Pro10 level by Elite mode.
but if p10 is too easy if setting like attached pix.
so master 5-8 is very good for play with fun. even master level over real-life.
still use the varier, but volley shot only use slice.