For me it's certainly the exhaust tone that's missing. The artificial sound is great, but nothing beats the real thing. I'm considering doing the bluetooth sound upgrade from Europe, but I don't know if that's really going to solve my thirst for a louder exhaust note. If I were you, I'd lean more 570 than the NSX, unless you get a great deal on the NSX which is definitely possible considering they're just sitting around.
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