I use an AG 300 with a mulit string job at 63lbs. I can hit with fair power, but I feel the AG 300 is sapping me of power that I have had with my old LM Instinct. I get much better spin with the AG 300, but I had more power with the LM Instinct. I am thinking of getting another racquet that would give me more power. I have heard that the new PD Cortex is a real powerful racquet and is comfortable b/c of the Cortex. I tried the original PD and thought it was too stiff. Any advice on the PD Cortex as an alternative to add more power to my strokes? Thanks for advice that anyone can impart.