Not being able to afford either, from a dreamers aspect its still a tough call. At the end of the day, I would go with a pewter Murci.... the Ford GT is an awesome looking car and sure, it will go up in value but really, who buys a car for the investment potential? Few. Even if our NSX's weren't slowly creeping up in value, doesn't mean I would think any less of them. So the depreciation angle is a weak one to play, IMHO.
Besides, people who could legitimately waffle back and forth on which one they might buy next week are most likely NOT worried about depreciation.
If I had the mint to go out there and start buying cars from my Fav-5, The Murci would be purchased before the GT, but, the GT is not more than a car slot or two behind.
The cost difference depreciation or not is a significant one.
Murci > GT > ? > ? > ? > Gallardo