Of course I am biased with having a 350z, but I think both cars look great. Add a set of wheels to the 350z and a set of lowering springs it looks amazing.

I don't think either motors respond very well to N/A mods. With intake/exhaust/plenum spacer/test pipes I put down 250whp vs about 230 stock. You can make great power boosted though. I get over 400 whp at 8.5 psi. The torque difference is huge between the two.

The s2000 was too small for my liking, the Z is a lil bigger and just a tad more space.

Either car is nice though. I am happy with my car, Twin Turbos and still 27 mpg on highway if driving normal.