I'm just curious but since you have been looking for over two years on Prime for a "sub-$20k" NSX ("salvage ok"), then how is it you are willing to spend considerably more for a faster depreciating GTR?
The GTR has some amazing attributes, but I'm sorry the platform is just so blase'. I mean it's a Nissan Altima at heart with lots of very nice bits stuffed in it. I may consider the next Gen. NSX as an addition to my existing NSX, but I don't see a Nissan in my future.
GTR prices dropped even faster when the NSX 2.0 was announced with AWD.
Cars that do the driving for you with completely forgettable looks are not really my thing.