EVOIX, 350Z and RX-8. 3 totally concepts. It's like trying to compare an Euro to a WRX. The differences are totally well defined.

You want a hard raw car that compromises comfort and fuel economy for performance and handling, then go EVOIX.

You want a comfortable cruiser that can give a bootful and handle good when you want to, yet remaining fuel efficient, 350Z.

If you want a practical sporty car, and don't care about outright speed nor fuel consumption (or you just love rotaries), then RX-8.