I am looking for a deep sound. I am in love with the way the new S5 sounds. Obviously i know i wont be able to make my car sound anything close to that since it is a V8, but that is the direction i want to go in. I like deep sounds, not high pitch honda civic kind of crap. I was wondering which brand i should look at. Ive heard millitek is good, borla, magnaflow is ok, but which one will give me the most for my money and which one will give me the deepest sound while still being CLASSY.