I guess it's all how much you like the R8 and to me mine is exactly what I wanted. Then the decision would be between a V8 (charged) or the V10. I had a Gallardo and well I don't anymore. So charge it is, so now it would be between the TT or Supercharger. I would think the price is either the same or more for the TT. The performance is probably close enough to negate that, so with the supercharger I would still have 3 more years on my warranty. Hmm, I think without any other reasons I would take the supercharger. Now I plan to call another Audi dealer and see if I can work a better deal on the labor, but unless I am missing something the supercharger seems to be the way to go.
:banana
John