I am a decent player. I have a huge serve that runs far past the rest of my game, in terms of development (serving was the one thing I could always practice by myself...), and I have been playing for a few years now. I have a couple nSix-One 95s that I really like. Since they came out, I've had my eyes on a kSix-One/xSix-One X, but is there REALLY that much difference? Seems like it would be negligible. I'd really appreciate insights.