The RK would be fine if you re-map the system as they run TOoooo lean.
The HD will as always need to be personalized and reworked to your perfection for it to be a platform of comfort.
I am not up to speed on the computer versions---but I know there is a cure..if that is your only complaint.
Personally, I think we all need several bikes in the stable.
I like the F6, but it sucks for rider position comfort.
The HD is good for some stuff, the F6 for others.