Another S2000 owner here. Just like everyone else has said, if you want only straight line performance stay with your Lightning. I would say the 350Z and S2000 (both stock) is a driver's race in a straight line. Once you hit the track there is no question that the S2000 will take it. And that is what the S2000 is, a track car. Straight line performance is pretty good and if you have the money you can get as much as 400 RWHP+ with some of the new turbo kits coming out. For me it just came down to the fun factor. I just don't know what it is, the handling, the 9K redline, or what, but this car is a blast to drive, even when I am making a quick grocery run, I just love driving it. Also the car has an awesome design, one of the best designed cars, IMHO. Although, if you are thinking of picking one up, I would get a 2002+ model, since they updated the ECU and added some other nice features, like the glass rear window (00-01 has a plastic one).