I used to use Mappoint (same as Streets) but it's on an old Windows 7 computer which I don't like to carry with me. It was a great program and I am also disappointed Microsoft discontinued it. I have Garmin Mapsource (ok but doesn't work well on Windows 10). I agree BaseCamp is terrible. Probably good if you're a real nerd.
I've been using Windows Maps which is an OK program with an aerial view option that only works when on line. The road view works off line if you download the maps on your hard drive. The biggest fault with this is you can't save a route. You can save favorite locations but for some reason I can't save a route. Unless I can't figure it out (a real possibility), this is a major flaw.