Hey guys, Just purchased a 'Wilson Hyper Hammer 5.3', the one Henin uses, except without the powerholes..... and let me just say, this racquet suits my game so well! It's light, but so stable and provides alot of POP!! Great for spin aswell. Enjoying my tennis too much now. Yewwwww!!! I went from N90, to PS Tour 95, to Ntour Two, and now to this!! found it guys, my Grail, ordering a couple more. Just wanted to know though, what difference do the power holes make??