That's the way I'd be looking at it too and I think that pretty much sums it up regardless of the fact that the N1 is the more desirable (well at least to me) car.
If you had a stock (non limited ed) GTR would you want to mod it and take it to the track? If not, then without question I'd go for the N1.
Just my 1c. Good luck making the decision, I know it can't be easy.