Aerial Model 9 vs B&W Nautilus 802

Okay, help me out here ! I own Nautilus 802's and drive them with ML 436 monos...really good results ! BUT I am told by some that the Aerial 9 is even more dynamic and transparent. Anyone out there ever hear them side by side? I am biased towards PRAT and great bass response. Thanks in advance for your thoughts !
Bill