I am pessimistic and would say most S refresh vibrate and if you find one that doesn't then It is a happy accident as this is a design issue. mine is very subtle and hard to notice unless you pay attention and know what to look for.
We had 3 Plaids (2 22s and one 23) parked in our club house last weekend for Spring event done by our community for the kids. I was chatting with there owners and discussing what we like and we do not about them, when I mentioned the vibration, they said they do not have it so we went for a drive in both cars and I showed them how to get it (lite foot on the acceleration, slight uphill and viola). needless to say they both hate me now
I bet if someone say they do not have it then 99% they are either heavy footed on the acceleration and they blew through the zone quickly or never cared about slight imperfection. My wife had her MYP for a week with the rear mirror rattling and she never cared till I drove it and was WTF!!!