I recently installed an Eisenmann race exhaust with sound pipe (non resonated). Was able to compare it between the MP exhaust and meisterschaft GTC in person. I thought the MP exhaust was too soft for my liking, only a bit louder than the stock. Eisenmann race and meisterschaft was similar in volume, but the Eisenmann had louder pop/gurgling than the meisterschaft in sport mode. I also find the armytrix / iPE sound from youtube clips not deep/bassy enough IMO. Here's a clip i took recently, check out the sound. There isn't much clips on the sound of the Eisenmann on the net, so hope this helps.