My impressions are that the VSS does make a difference.
I spend most of the time on the motorway so I don't notice it then but once off the motorway and on the twisting and turning roads home it comes into its own. It does seem to have more directness and the turns feel easier when you're having to go round those tighter bends.
I had a loan car a few weeks ago without VSS and it did feel different. The car didn't seem to go into those bends with as much purpose. On the way back home then in my car it was back to best
