I like the new mustangs more than the Camaros, and the Challengers more than the Mustangs, and the Chargers more than the Challengers...
To be honest I'm not super in love with any of them, the futuristic/retro thing isn't aging very well IMO. The newest mustangs are pretty cool looking, I think on a grand scale they'll age the best.
I'd get a Pontiac G8 from a few years ago before I'd get any of them...