Few experiences are as viscerally exciting — and terrifying — as buying a new sports car. On one hand, feeling the raw power and barely contained energy of a brand new Mustang or Charger humming under your fingers is as intoxicating as seeing the looks of envy as you drive it off the lot. On the other, sports cars tend not to be practical investments, and most people can only afford to buy one at a time — which means you need to make sure you are happy with the one you end up with. Within the world of sports…