Corvette - $45k
NSX - $80k
Depends on what you want. If you want speed for cheap then the Vette does it. Both cars are good and have their highs and lows. The Vette is highly overrated, its a fast car but everyone who did their investing right can own one. The NSX is a great looking car, but very over priced. For that price tag you would expect a lot more car wise.
But thats just my opinion.