 My 550i lease just expired and I wanted to downsize the car but not the features. The A4 2.0 with Prestige seemed like just the answer. I have never heard a better car stereo than the B&O system that comes with the Prestige package.  The daytime LED's are very cool and this design really hit the target!  I was also used to keyless go so this option is now a must have for me. Finally, the side alert is a great feature and my mirrors tell me if someone is in my blind spot with a flashing light.  Except for power I actually like this car a lot more than my 550i.