so... I have apex N1 right now. I liked it at first, but now it is a little too loud for me. I was just wondering if people know of any quality cat-backs that are as quiet as possible, but still provide excellent performance. I have heard that the rsr exmag is pretty good, but i've never actually heard it in person. I have however driven 2 cars that had the apex world sport and they were both bearable. But if the rsr is quieter then I would like to go with that. Just curious if anyone has any suggestions about exmag vs ws or if anyone knows of anything else. thanks.