Hi guys, I need your advice. I played tennis back in my yearly teens, and now after more than 10 years i am back to it. I can't decide which racquet is better for me, the Prince Ozone seven or four. Im 27 yo, 182 cm (about 6"). 78 kg (about 170 lbs). I would rate myself as a beginner+ Which of the racquets should i choose and why ? thanks !