If you're looking for the most realistic gameplay from a robot you will not go wrong Butterfly's Amicus range of robots. Like Power Pong robots, these feature a 3-wheel head that enables them to produce a wide range of spin and trajectories in the same training session.
Read about 3-Wheel Head Advantages.
Training with a robot is a great supplement to practicing with a partner as it allows repetitions of the same strokes, leg movement and spin-return exercises. With the help of a progammable robot like an Amicus, you can expect to improve your precision, technique, and footwork.
Butterfly table tennis robots let you perfect specific shots with particular ball speed, spin, trajectory, and placement in different programmable sequences. Table tennis players of any level could benefit by practising with a Butterfly robot.