The new Charger is AWESOME. Just an excellent, excellent job. I actually own a worked-to-the-bones newer Mustang, but I would almost consider trading it for a new Charger.
The older Mustangs are obviously beautiful. Give me a 1970 Fastback and I am a happy, happy camper. They have done a good job on the newer ones, but I am not enamored with the newest Mustang.