What do you think is the best aftermarket exhaust option for a Nissan 370Z?

I just got a Nissan 370Z and I'm looking to amp up the sound. What are your recommendations for an aftermarket exhaust that will give me the best performance and sound?

I would highly recommend the Invidia Gemini Cat-back Exhaust. It's specifically designed for the Nissan 370Z and offers a deep, aggressive growl without being too loud.

I've heard great things about the HKS Hi-Power Dual Exhaust. It's a bit pricier, but the quality and sound are top-notch.