Looks to me like you're sold on the S-2000. I was considering it as well as
the RX8 and the Infiniti G35. The S-2000 rides kind of rough. Plus if you
don't keep the motor above say, 5500 rpm, performance is mellow. As long
as you don't need to carry more than one additional person, the S-2000 is
an awesome sports car. All three of the above mentioned cars have their
strong and weak points, as does the Si.