Performance is a broad term I suppose. I love all around performance and the old geezer gt500 delivers MORE all around performance than the hellcat challenger, but a lot of guys like drag only set up cars, I completely understand. The gt500 does great at both of them. I like the feel of it... yeah.... the SRS isn't a soft ride but it doesn't effect it as much as people think. Get ready to trade in the hellcat on the next gt500 because it's gonna be even better on the track and strip. I'll be picking up one for sure!!
I dont disagree with a lot of what you are saying. What the 13/14 GT500 gives up in a straight line to the HC, it more than makes up for in the corners.
I daily drive my HC, and previously my '13Gt500, when weather permits. I have to say I much prefer the HC as a daily driver, performance muscle car. To me, it is a better DD combination of performance, technology, and comfort. It feels like a grand touring missile.