Exhaust options

PE vs AA. I like the sound of both, but the AA looks to be cheaper (although backordered). I'm looking for something only *mildly* more aggressive than stock that doesn't drone too much. Is the PE worth the extra dough?



Also going to get the AA software tune - does it make any difference getting the tune or exhaust first? At the same time?



If you chose one over the other for your 328i xdrive, why? Any regrets after the fact?



Thanks!