Has anyone played these three rackets and can you give a detailed description of them and the differences between them. A year ago i demoed the 300g but that was in stock form. I thought the 300g had a very small sweetspot and it vibrated a lot. I couldn't generate much power but this was in stock form. I want to lead it up with 12 grams at 3 and 9 o'clock without counterweighting.