I was stringing for a guy at a Futures event, he was from Australia, and he was hitting with a "Topspin" racket. I looked into it more and found out that they are custom made rackets at only $149.99. Does anybody hit with any of the models? How do you have them set up? Also, I saw that the 93" racket with a 18/20 pattern has a stiffness near 70...thats a recipe for no spin? Any feedback is appreciated.