Zchaser, sounds like you may have answered your own question. Another reason to get the 11 Nismo vs an 05-06 Porsche is obtaining a car loan for a potential future buyer. Many financial institutions will only lend money on a 5-6 year old car, anything older than that than they will have to get a personal loan.
So lets say you get the Nismo, you have until 2016-2017 if you choose to sell, for a future buyer of your car to obtain a car loan for your car. The Porsche at this time would have to be paid cash. Or the buyer would have to acquire a personal loan from an institution, which for them would be of higher interest, assuming they can obtain a personal loan for this size. This will lower the amount of potential buyers for your car, thus diminishing it's resale value. Most car dealerships will not give you a TRUE trade in if your car is over 5-6 years old.
Get the Nismo, save some money, sell or trade it in 2016-17 and get a newer Porsche then.
