I hit with the TW Bosworth Monica Seles Yonex Super RQ-500 today and it was a monster (in the positive sense) frame. Labelled 15% stiffer by TW than a normal SRQ-500, it is wider at mid-head. It Weighs 12.6 oz. and is head heavy. Very, very powerful. Was this frame unique to Seles? Did any men play with it? This racquet is a heavy swinging puppy. I think most women who said they played with it used PJ's that were thin beamed. I don't remember any men who played with it. Best for flat shots or shots with little spin.