Both cars are great. Come done to what you like and are willing to spend. For me the extra power and upgraded suspension and brakes were important and they both pay dividends on HPDE. Also the extra power is helpful in dispatching V8 powered drivers who think its a hairdressers car.
Do yourself a favor regardless of which way you go and pick the newest and in best condition car you can find and afford. When stuff goes wrong these cars are expensive to fix.