Kev,
C'mon! You only live once! (Unless you're JB!)
Dynamic makes it firmer. 'S' makes it hang on to gears and 'blip' as you slow down. TRAC DSC lets all hell break loose! Has to be done at least once a week!!
Put them all together with a bendy country lane... Heaven on wheels!
My other half (AKA SWOTO) is my speed limiter. Can't explain in words that I bought and XF-S, not to go slowly, not to kill us, but to keep (mainly) legal and go fast. It isn't really about how fat you go though, but how fast you get to how fast you can go.
Give it a go! I bet you'll be grinning!
Cheers,
J