Yikes! Not another piece of software to agonize over. Isn't anything simple anymore? Haven't I lost enough sleep over this already. When I was young, when you wanted to play serious tennis you had one choice for sneakers: Jack Purcells, and one choice for racket: Wilson Jack Kramer. That was it. Now you have to be have a degree in chemical engineering, bio-physics, and graphic design to make an "informed" decision.