Hi. I recently had to choose between a Yonex Ti-80 and RDX 500 MP. I randomly chose the Ti-80, and boy, was that a lucky choice. This racquet is superb. I strung it with Prince syn. gut at 58 lbs, and it took a while for me to get comfortable(a couple hours of play), but today, I was really hitting well. My serves had tons of spin. I revolved my second serves around topspin serves and slice serves, and both were efficient. My first serve was also excellent. And man, my one handed backhand was waaay better than it normally is with other racquets. It was so whippy and had a good mix of topspin and pace. My forehand was also good. I could do a forehand with lots of top, or I could just blast it flat. I know there have been lots of threads about this racquet in the past, but I urge you guys, if you haven't tried this racquet, and are looking for a new one, DEMO THIS!!! Oh, and I also loved the feel. I liked how it was crisp and precise, not mushy. But don't get me wrong, it's still really solid, and i don't have any arm probs with it. But make sure you use a vib. dampener. It feels a lot better with one.