This is tough, since both of these are AWESOME cars .

On the one hand, the Civic Si has only 64k miles (advantage: Si), but then the GS-R has more power and torque (advantage: GS-R).

I personally prefer the more "rev-happy" nature of the Si's B16A2 engine; the torque peak of 150 N-m (111 lb-ft) does not occur until a stratospheric 7000 r/min! It loves to rev. But the GS-R will give you an extra 7 kW (10 bhp) of peak power. But what do you think of the modifications on both cars? Which is more appealing to you?

I feel for you, though. This is definitely going to be a tough .