retiredpop, which Topo package did you buy? I found the info on Garmin's website to be somewhat confusing.
I bought the Garmin Mapsource TOPO Canada package. Only thing I don't care about it is that it does not show all off road trails even if they are what I would call roads but maybe none of them do. They do show power lines however. It is very accurate as far as topographical information like lakes, streams and elevation.