that's exactly how i feel about the RS6, i too own a 750Li and by comparison the Beemer feels carved out of granite, to quote you again
. I had a 540i as well plus a few E46, and yeah, Beemers do get you that feeling that no matter how much you abuse them they always fall on their feet, while with the Audis, they seems to be like the very pretty girl out there but way way to moody, you got to work your ass out to get her in a good mood and takes so little to spoil that
However, i love her as it is