For better sound and performance, I will consider the N20 when the BMW performance exhaust is available installed at the port of entry, and will order DHP. I have pretty much ruled out the ATS 2.0T since I don't see options available to improve the sound. Not going aftermarket route.
That leaves me with only the ATS 3.6L as a contender for "sound proof". Will want LSD option on the ATS too. And of course at that point the 335i will be in the contention, so is the S4.
For now personally there are really no other viable alternatives I can think of. I may still test drive a G37S simply because of its fantastic lease deals, but unless it really impresses me in the driving dynamics and fun department, it will not be a serious option.
Last edited by dtc100; 09-29-2012 at 10:24 AM.