Just rent a Viper and try putting 300 miles or so on it comfortably. Sure it's fun and has lots of power, but man, I hated it after a while. Poor visibility, driving position in relation to the pedals sucks (they are set off to the left), shifter sits high and is in an awkward position, footwell is too small and offset for both driver and passenger, fuel economy sucks, A/C is almost useless with the hot exhaust running next to you, the roof leaks (don't drive in bad weather), and I could go on and on.
But the Viper does look good, has lots of power, and is exciting.
Cool car, but for a daily driver? Hell no. Maybe a second car or weekend car.
On the other hand, the NSX is fun & user friendly. It doesn't do anything really GREAT, but it does do everything suprisingly well. It's a real well rounded sports car IMO. Good choice for a daily driven sports car.