I am using a rectangular grip for the first time and it is hellish on FH (but actually good for serve and a OHBH). I am going to have to do some kind of surgery on the handle to change the shape but. Even when I think of pros who used head (Agassi Djokovic Dimitrov Gasquet Haas Kuerten Wawrinka Murray Safin Berdych) all had way better backhands than forehands. The only exception I think is like... James Blake maybe? Verdasco maybe? Monfils maybe? but I don't know if they are actually Dunlop or head shaped handles or wahtever (I know Djokovic doesn't use head shaped handles either) but this is an overwhelming imbalance of many many palyers with better backhands than forehands in a sport where OVER two thirds of people are supposed to have better forehands. This is a legit anomaly.