Is it really a physically demanding racquet? Or is that what people say and then it goes around more and more? Or have people’s expectations of themselves decreased. ‘Physically demanding’ but 15-16 years ago, the world championships were won with 2U racquets. Everyone was using 2U and nobody was saying a racquet was ‘physically demanding’. Extra stiff shaft racquet? My daughter and her friend are using a 4U ZF2, 3U AX88 and clearing full length - they are ten years old. Could they do better with more flexible racquets? Possibly. Could they do better with learning better techniques? Definitely much better. I think changing a racquet is way down on the list of priorities. Changing a racquet might improve one area of a game but other areas might get worse. Acceptable for some people though.