When we got ours, we first drove the RT, and then the SRT. (We have an older '06 5.7L Durango).
After getting in the SRT I knew that was the only way to go. Ours is a '19, so HC wasn't an option.
The SRT is worth the extra $, it is so much more vehicle than the RT. It's not even a comparison.
I've got my Challenger HC, and my PW. I like driving the DSRT just as much either of the other two.
We're considering an upgrade to the DHC, but it will be a significant hit to trade in the DSRT.