They both handle so differently, to me its not an easy comparison.
I have driven about every Vette out there and ended up with a 94 NSX.
To me, my NSX is the best handling car I have ever driven.
I can feel the road, and am not insulated from it. I just think about changing lanes and its done. No drama, very little driver input, the car just goes where you want it to go.
Maybe its the cab forward design? (sounds odd, but as its been said before, its like driving on the head of an arrow (something like that)
The forward visibility is unlike any other car I have ever driven.
I have not driven every car out there, but have driven many Vettes, Porsche's, BMW's etc.
as well as several cars with major susp work. Still, nothing comes close to my NSX. (To me)
I guess a lot of it is just personal preference. I have no idea which I could run faster lap times with, but do know which one I prefer to stuff into a corner.
Drive as many cars as you can prior to making your decision.
Take your wife with you & let her drive both.
Get both cars near their redline to see what its like.
(with permission from the cars owners 1st)
IMHO that's a mistake many make when considering an NSX, they never
see the 2nd set of cam lobes.
VTEC is very cool.... And many "would be" owners never know its even there...........
Have fun & good luck!