^ instant throttle response, high revving is what does it for me. Torque? Pfftt as if I care.
I'd might as well get this over with. The I6 engines and now the S65 have been treats. With the advent of the turdbros, it is going to be a long time before BMW has anything that interests me. And for those that are hoping for zero turbo lag...take a spin in an M5. It's still there.