RideWithGPS is, for most route-plotting, the most complete tool there is, and also the easiest to use, certainly for the way that I set routes up. (I also use BikeHike for it's OS-maps loveliness when plotting offroad/bikepacking routes.) I have not come across any other tool that comes close.
I have set up well over a thousand routes on RWGPS over the years, so I have had enormous utility from it, first on free then on Premium for the past three or four years.
Whenever I had pinged their support team, they have been helpful human beings.
Running a service such as RWGPS is not free.
Therefore I am more than happy to pay for Premium.
I let my Strava subscription lapse, as it's not all that useful, although I do pay for Veloviewer to keep on top of my square-bagging ...