NSX vs RX-7

Which one would be a better buy as far as potential goes? Both are very quick, and can be made even quicker. I do like the style of both cars.

With the NSX's more exotic, supercar status, I'm sure it doesn't have nearly the aftermarket that the RX-7 does. So, while I'd take an NSX any day of the week, the RX-7 probably has more potential

I have seen some companies doing things with the NSX, such as Science of Speed. If money was not an option, which one would you pick. The style of both of them is great. They are definitely different, but I still think it is difficult to decide between them. If money was no option in reality, I would by them both.