Weird thing about the GT-R is that it is undeniably an awesome machine. Nissan did such a great job and if you only have $70k or so to spend on a pure performance car you simply cannot find a better one for the price. Weirdly I would have an M3 instead though. It is no where near the level of the GT-R and is really overpriced when comparing performance but it just looks so much more stunning than the Nissan and has more a sense of pantomime.
Of the 3 in this test I'd say your brain should pick the GT-R, your heart the R8, and your inner badge-whore the 911...
2013 Lexus GS 350 F-Sport Starfire Pearl/Flaxen w/nav
2009 Hyundai Genesis 3.8 sedan Sapphire/Tan w/nav
1997 Ford Expedition Eddie Bauer