I'm looking to get a catback exhaust system for my car, and right I'm doing my research, and I can't find much about the MBRP system. I've heard nothing but good things about Magnaflow so I'm not worried about that, but is it worth the extra $500. They sound about the same to me. Also, Magnaflow has two exhausts for my car, one for cars without and with an underbody catalytic converter(#15215 and #19325 respectively). Is that referring to a cat delete or something else? Let me know what y'all think.