I think it is quite difficult to judge whether a racket is good or not. The most crucial criteria is whether the blade suit you or not. What I mean is whether the blade suits your playstyle or not. When the blade suits your playstyle or feeling, then you can try to adjust your strokes a bit. If the blade does not suit your playstyle, then I think it may not be suitable for you. The second criteria is the racket’s performance, including its speed, control and more. A good blade can help you to bring out or strength, or to compensate your relative weakness. So the choice of equipment really depends on yourself. I think choosing a right equipment for a professional player is very important. Because a good equipment can help you to play strokes with better quality. Sometimes when you want to play the ball to a precise placement, the right equipment can help you as you are used to the feeling of the racket. I think I can describe a racket as a mic to a host. The right equipment can hep you to “express” your thoughts by bring the ball to the place you want. So once again, this is why a right equipment is so important to us.