This is the most accurate sound comparison between stock, sport, and race (Super Trofeo)

Lamborghini Gallardo Exhaust Comparison. Stock VS Sport Exhaust VS Super Trofeo - YouTube

I know it is based off the Gallardo platform, but they're pretty much the same sound-wise. The best sounding is the FACTORY INSTALLED sport exhaust. Stock is too quiet and mechanical sounding. Race exhaust is LOUD, but NO tone or exotic sex sounds. Sport is louder than stock and overpowers the mechanical sounds. The tone is deeper, more exotic, and and is amplified in the car.

HOWEVER, the best will be a real titanium setup from like Akrapovic. For now, go order Sport. Sadly it won't be factory installed, but should run you 2.6k instead of 12k. Then get a titanium setup for that F1 sound.

Cheers!