There is a huge difference between planning a one or two week excursion & a three or four month trip.
There is no replacement or substitute for the stand alone MS Streets & Trips which is like carrying around most every map right in your laptop. I have MS S&Ts 2013 on a 8 year old laptop that is on its last legs having done tens of thousands of miles being bounced around on a laptop tray in the truck.
I somehow lost the original software disk, not that new laptops can accommodate disks, & don't know how to copy from the old laptop to a newer one.
Most of the online mapping seems to only allow about 8-10 waypoints per file & once saved or downloaded there is no ability to change once on the road without connectivity.
We seem to be going backwards in flexibility in trip planning.