We had a blast there during summer time, although trails we hoped to walk were snow covered. The infrastructure there was amazing, due, I guess to the Olympics having been hosted.Deer Valley does not allow ski boarders but has some good intermediate runs. I haven't been to " the Canyons " since it was called Park West so can't comment. Park City of course has lots of terrain at all levels.
If you want to go back to the other side of the range, Solitude and Brighton usually have 200 inches more snow over the season than the Park City side.