Love the Volvo V60, yours particularly. Congratulations!
I don't like many ACC systems and haven't sampled Volvo's, but must single out the Subaru EyeSight system for being very unobtrusive and natural.
I did use it in stop and go traffic from Mississauga to Oshawa, plus in other highway and rural driving and found it very, very good. With it, just had to flick the steering wheel button if at a standstill longer than 5 seconds or so and passing slower cars didn't cause the car to slow if you tapped the turn signal on in time (plus it has 3 selectable distances). Quite liked it, unlike most other ACC systems I've driven which are annoying. If Volvo's behaves similarly, chances are I'd like it too.