I've used a 4 and 3/8 size grip for years. And then I heard somewhere that the pros are switching to smaller and smaller size grips for better ball control. So when my boyfriend bought me a new racket for Xmas (Head Microgel L4), I decided to go with a 4 and 1/2. It may be all in my mind but I feel that I can indeed control the ball better. Has anyone else experimented with this?