I've been playing with the GPP for about a month. Love it. I am coming from the GPS and the YT Prestige S before that. I'm a middle-of-the-road 3.5 so I was expecting the GPP to be way over my head. Love the extra weight on slices and volleys. I'm using Babolat Xcel 16 strung at 53 to 56 due to arm issues.