Looks like it's my turn to not use the search button and start another thread about this. My S3 has the non-Bose Chorus head unit and it sounds dire. I'm wanting a better sound, but I want to keep it as factory as possible. I've been looking at ugrading the head unit to the Audi Concert CD one, and replacing the 6-CD player with an Ipod. Also looking to do the Stealth sub thing (finally), but what are peoples thoughts on changing out the speakers? Is there much improvement to be had without replacing the doorcards?