How do these two racquets compare? I have been using the K6.1 Tour 90 ever since it came out and despite how much I love the control of that racquet theres 3 big problems. #1. I don't feel like I get enough power out of the racquet for the amount of strength I put into each shot. To put this in perspective, I tried the pure drive and the power was simply incredible. I was able to hit much harder for a lot less effort. #2. Volleys. The Tour 90 seems to have such a small margin of error. #3. Elbow problems with serves. Probably has something to do with swinging a steel bar (that's what my friends dubbed the tour 90) The bottom line is I can play well with the tour 90, but I feel like it is really holding me back. So I've narrowed down the list to the K6.1 Team and the KPro Tour. I feel that having a slightly larger head and lighter frame will help alleviate some of the problems. How do the two racquets compare? Which one would better help me address the problems I am experiencing?