Se7en, I anctually used the blue lens for 1 day, soon after the install was complete, and I think I would like a proper red or a proper white better.

Yes, the system sounds well even without a bose, but I remember the install I had on my old Polo had better sound quality, even consiering the car was not even nearly as good as the A3 and was more noisy. I think in few months I'll replace speakers and amps with something of better quality. The A3 is conmfortable enough to deserve this