let me say it this way.  The v8 supercharged RRS has tremendous power, but you can't use it around sharp bends, on or off road.  Yes, they have a new electronic diff, and torque vectoring, but they weren't as skilled as Porsche in pulling off body control or the ability to take curves at high rates of speed.   So, if you're driving in canyons with curves, the car will fool you with all of it's acceleration and noise that you can apply that speed into a corner.     My guess is that the upcoming RRS RS will be able to be height adjusted even lower and they will have coordinated their diff and vectoring systems to a greater degree.    Until then,  my money is most likely going to go with the v6, as it has plenty of power and has a closer 50/50 weight balance which you can feel around corners  (close to 400 lbs lighter than the v8).