I just had mufflers and tips installed on my B6 3.0 FWD. I went with Magnaflow mufflers and Magnaflow 3.5" straight cut tips. I left the factory resonator, although I believe Magnaflow does make dual resonators. Overall, I'm happy with the tone and there is a boost in performance. Its not much louder than stock, but does have a lower note to it. I debated whether or not to remove the resonator, like some guys do, but after listening to the exhaust with ONLY the resonator in place, I decided there was plenty of noise and air passing through the resonator. In the future I might upgrade to a full cat back system, but I'm happy with it for now.