Which supercar would you drive?

As you can probably tell, this blog is not big on brand new supercars. However, I would like to experience driving one, or two, or three, for research purposes, of course. That's why I'm trying to finagle my way into driving a couple of them in Las Vegas next week, gratis. If you could choose just two from the following list, which would you choose and why?
  • Lamborghini Gallardo LP550
  • Lamborghini Superleggera LP570
  • Lamborghini Aventador LP700
  • Ferrari F430 F1
  • Ferrari 430 Scuderia
  • Ferrari 458 Italia
  • McLaren MP4-12C
  • Porsche Cayman R
  • Porsche 997 Turbo S
  • Audi R8 V10
  • Aston Martin Vantage S
  • Nissan GT-R
  • Mercedes SLS AMG
Personally, I'd pick the GT-R for the technology and the SLS AMG because gullwing. Clearly, there are more "desirable" options than those two.