[PetoM3]

Went for the Level III system. It sounds amazing, super clean and you can hear tones that you couldn't before. I'm very happy about what Musicar NW had to offer. The install was stellar, the whole install took around 6 hours for 3 installers on and off, install and tune up. It looks stock.

I went for rear retain for cost reasons and added a DSP instead. The rear speakers were left for parking sensors and are down-tuned otherwise, so it makes me desire to have a sound come from behind. However, they made it sound like there's a center channel and it does sound great. I highly recommend this, BMW's EPS is nowhere near this in terms of sound quality, though if you don't mind spending extra $, it might be worth going EPS first, to get wiring setup and then upgrade with Level III.

Here's some pics from the install: