I'm 15 and I'm a pretty high ranked junior player. Right now I have 3 O3 MP Tours (I cracked my fourth). I'm looking to demo rackets right now, because I've had my O3 Tours for about two years now, and I'd like to see if theres anything better. I'm an aggressive baseliner who hits big, and comes to net to finish off points. I also hit with heavy topspin from the baseline. I was wondering if anyone had any suggestions on rackets to demo. I prefer rackets that weigh around the same as the O3 Tour maybe a little bit heavier. I also like rackets with open string patterns. So here is my list of rackets to demo: Speedport Tour MP (I've heard great things about it, and since its basically the new version of the O3 Tour I think I should give it a try), the Pure Storm Tour (I've also heard good things about), the Ozone Tour, and Microgel Prestige Pro (sounds great, because its a prestige with a open string pattern). And if turns out I like my O3 Tour better than all of these I will stick with it. Any suggestions on other rackets to demo, or corrections on this list would be greatly appreciated. Thanks.