My mate has an S2000.
Nice car, totally different feeling to the GTA but it is VTEC and an outrageous burst of performance comes in a very short rev band. Out side of that it is decidedly average.
Like TB says, they are very hard to drive within the peak power band and with the torque and power of the GTA I would expect more grunt more of the time.
That said, an S2000 in the hands of a pro would really be something.
