I agree with ya..e370 is most likely louder due to it exiting in a 3 inch from the x-pipe back but I have never heard that exhaust in person. I'm sure you will be happy with either exhaust you choose to get. Good luck!
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2010 370Z NISM O #300. - RZG 3” Long Tube Intakes | Motordyne E370| Motordyne ART Pipes| Z1 Ported Upper Intake Manifold| Tein | Hotchkis | NST | EBC | Likewise Shift Knob | Torque Solutions Short Shifter | Morimoto | RZG Tuned 347whp/282wtq
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