We visited all of the superchargers east of us on our road trip to Quebec this past summer, Cornwall, Kingston, and in Quebec with Montreal and Drummondville. Went to Saguenay, about 2000 km trip, with $5 spent on third party charging (FLO network), the rest "free".
All of the superchargers west of us visiting USA.
North superchargers we did this winter a number of times. A new one is being built in Sudbury, we were just there last month, didn't need the charge as the Science North parking had a destination charger.
The last one we got to was Grimsby, as my wife went to Niagara this past weekend and tried it out.
My wife does most of the long distance driving for her business, about 30,000 km per year at the current rate.
About 30% of those km are supercharged, then 20% destination (hotel, resort, attraction) charging, and %50 at home.