Fiat Fastback or Ford Mustang? Which one would you choose?

As Fiat enthusiasts, we're often asked about our opinions on other cars. I'd like to spark a debate - would you choose the sleek and stylish Fastback design of the new Fiat 124 Spider's cousin, or the classic American muscle of the Ford Mustang? Let's hear your thoughts! What makes one better than the other in your eyes?