ILMP5, I really like the sound from the exhaust but then again I have no room to compare because I didn't hear the other exhausts for the P5, its a deep gargle that my boys say they can hear me down the block. As for the quality, I would not recommend it because it sits crooked and dosen't look right unless you know how to weld and modify. On top of that the Bosal people are real bad in the customer service aspect. I have been bitching since i got the exhaust about the way it sits and don't answer me back because they know I am right. I would go with the skunk 2 exhaust, sounds pretty viscious. Personally i am waiting for Greddy to make exhaust for us and then I will swap...