It depends on what your after. The rear seat room is awful in the CTS. The Charger has the most room followed by the SS. I don't know about the SHO, but since it is a Ford I assume it has transmission problems.
The Dodge Charger and SS will be reliable. I agree the SS is boring, but it will out handle the Charger and Ford. I think the Charger looks the best.
Test drive Video of the Chevrolet SS