Personally, I'm in awe at the excellence of RWGPS. I planned an entire 2 week tour in the Czech Republic with it, and the data was flawless, though it's always possible to be confused or taken aback when things don't look like you expected. I have hundreds of routes planned with it. If I want to check out if a road is gravel, I zoom in using Satellite view. That works well IME. I'll leave Surfaces turned off, no need for it. It's remarkable how well it can estimate my riding time for a new route.
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Results matter