The new Scat Pack Charger is
The new Scat Pack Charger is an impressive car and handles way better than most give it credit for but its hefty weight of 4,400 lbs can be felt when you get on a curvy road. The SS Sedan is over 400 lbs lighter and is so well balanced that it even drives lighter than its actual weight.
If your "road course" is mainly straight flat roads the Scat Pack Charger will clearly dominate the SS but throw some curves & elevation in the mix then the SS Sedan rules. If you ever get a chance to really drive a SS Sedan then you will understand.
Looks are a personal preference and I appreciate the understated looks of the SS Sedan. I get more positive feedback on my 2014 SS Sedan than I do on my 2010 Challenger SRT8, 2012 Camaro SS/RS or 2013 Mustang GT with a shaker hood. Most people don't even know what the SS Sedan is or they know but haven't ever seen one.