Its funny that you posted this thread on S2Ki as well. But I guess its good to hear both sides of the fence
My reply (Billj747 over there) from S2Ki:
Stock for stock, the S2000 is a faster track car. For slightly mod vs slightly mod, its still hard to be at a S2000 with coilovers and 255/255 tires. The NSX needs at least 235/275 width tires and coilovers -and very importantly: a baffled oil pan, to be competitive. Even so, it will take an LSD and the Japanese gear ratios to put it near par/eclipse the S2000 on shorter tracks.
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a TB WP job $1400 is not A LITTLE MORE than s2000 when labor cost $700.......... and a clutch $2200 is not A LITTLE MORE than s2000. $85000+ is not A LITTLE MORE than $34000. maintenance will not be A LITTLE MORE.
those 20 yr old ass brakes are the worst part on a $80000+ supercar.<!--QuoteEnd--></td></tr></tbody></table><!--QuoteEEnd-->
You only have to do the Timing Belt and Water Pump once every 60-80K miles. When you put that (and similar scheduling for the clutch) into perspective, its not that bad. In Vegas, we charge $1,200 for the TB/WP replacement. If that is a hard bullet to bite, then Porsche labor and parts will be far worse.
The NSX is a great car. I picked mine up for ~20K with 100K+ miles on it. The chassis was perfect, interior in GREAT condition, and if the car has a decent service record and regular oil changes, they can be tracked heavily with 178K miles on it like my friends car and have no problems. Of course if you can find a car that recently had a clutch job, TB/WP, then you saved a lot of money there. You can find clean cars for $20-25K with ~100K miles if you look hard enough.
Overall, the parts cost isn't that bad, especially quality aftermarket parts. Yes the car is 20 years old, but the chassis is very rigid (no creaks or rattles - except for the 95-96 year models which were T-tops that werent reinforced), and without sounding cliche, it is a honda.
The Cayman S is a great car and can be had for ~30K even. Its a quality car, fun to drive, but parts and labor are pretty bad.