I have a '19 Redeye WB with navigation and I was thinking of trading it in for a '21 SS. I just wanted to know if there were any other benefits to getting the navigation like a better screen, better head unit, better sound etc. If you go to dodge.com and build one with navigation it has a long list of things it comes with including HD radio, but nothing for the standard. Do they both have HD radio and if not is the HD radio that much better?