What is the best oil for a Nissan 370Z?

I recently bought a Nissan 370Z and I want to make sure I am using the right oil for optimal performance. Can anyone recommend a specific brand or type of oil?

I've been using Mobil 1 Synthetic oil in my 370Z and it's been great. I'd highly recommend it.

I've heard good things about Royal Purple oil. It's a bit more expensive but supposedly worth it for high-performance cars like the 370Z.