Base Camp is an amazing program IF you spend some time learning to use the software. There are a ton of tutorial videos on Youtube. Base Camp is not intuitive, and I can almost guarantee you that you most people spend ten minutes with it and give up. But it's worth the effort to learn.
I do all of our mapping on base camp and download the route files to our Garmin GPS.
Watch a tutorial or two on Youtube before you rule out Base Camp.
Also. Base Camp on your computer needs to have the updated maps downloaded, just like the maps on your GPS. They have to match version numbers exactly.