What are the best aftermarket exhaust systems for the Nissan 370Z?

I recently purchased a Nissan 370Z and I'm looking to upgrade the exhaust system for improved performance and sound. I've been overwhelmed by the options available in the market, so I'm not sure which one to go for. Can anyone with experience recommend a specific brand or model?

I would recommend the AAM Competition Exhaust System for the Nissan 370Z. It not only provides a noticeable performance boost, but also has a deep, aggressive sound that enhances the driving experience. My friend has it installed on his 370Z and he's extremely satisfied.