Id go with a supercharger.
Turbos are fun, loud and add horsepower no question but you have to build up the boost in a turbo, where a supercharger is constant power and you still get the same amount of fun and noise out of them but no doubt more horsepower. Plus no one can say they dont like the whine of a supercharger. But the only thing with a supercharger is because of the constant power i would recommend bigger gears being your car is an automatic.
But if you wanna go turbo I would say get a gt35r turbo, that will put you back in your seat.