it all depends on what ya want out of any bike....its all really bullshit, 90% of the time any race comes down to rider....all the litre bikes are so damn close its crazy....supersports are the same way....so its all down to what YOU like isn't....
personally i think the 04'-05' ZX-10r (2 time master bike winner) dethroned the GXR almost 3 years ago...