I have the GMG exhaust and downpipes on my S5, and the set up is amazing. At first I ordered the AWE b.c of its fame, and the quad style pipes. However, after being really hesitant i couldn't wait for AWE to deliver so i just ordered GMG and got it literally 3 days after i ordered it, and got it installed right away, and it sounds SOOOO GOOD. I think the RS pipes look better than the quad. Trust me i doubted it when i ordered it, but the second u turn ur car on after the installation; you will love GMG and yourself a whole lot more. Try them if you can...they are awsome