I think most people find the Garmin Edge works well. We have specific instructions for downloading routes to a Garmin Edge.
I'm at the end of my rope fiddling with Plotaroute, BaseCamp, and MapSource. Still not able to get GPX from Plotaroute into any useable trip on my 2460LMT.
I like Garmin GPSs. Which ones, if any, work directly with Plotaroute?