Unless you are asking to compare a performance sports car (ie 996TT) vs the M5, an M5 board is rarely going to advocate the purchase of any other vehicle . . . That said, I have to agree with this comment above, I am not a fan, nor have I heard very good reviews of the 745, but the 750 . . . it's a nice car. Not "better" than the M5, just different--If you can stretch get the far better looking 750Li.
<<<for her age martha stewart is pretty hot. i'd tap it.
pamela anderson however, i wouldn't get near without a full body condom and some bleach.