> even as they sometimes don't show the same info as they come from different points in time
And for unfathomable reasons Google Earth (the desktop version) can show historic aerial imagery, but no historic street view pictures, whereas Google Maps works just the other way round – you can view historic street view photographs there, but no historic aerial/satellite imagery. (And the browser version of Google Earth apparently can't do either.)
On the rougher part of the maps, I often get back to satellite view and/or StreeView if available (even as they sometimes don't show the same info as they come from different points in time -_-;). It's a handy backup that I don't get on the open source map apps