Just a quick question with refernce to the ICE in Audi vehicles..well specifically the S3.
I currently have the stock Bose setup with the sub etc in the boot; the headunit is an Audi Concert unit (not sure on model number)
My question being; I am able to upgrade the HU to a Symphony or Chorus unit?
I was speaking to someone the other day who said the Symphony is a better spec unit? Is this true and what are the differences of the three units?