I don't use anything on the bike mostly because I don't tour.
In the Mustang, or the truck, I just use the phone app on my iPhome 7+. I have noticed that if you put in a vague destination description, it may send you the "Scenic Route". But if you give a house number, Street, and town, you're more likely to get the faster route.
In the past, I haven't been a fan of having the phone mounted on my handlebar, because for me, it's a distraction. But like everything else in life, the judicious application of self discipline works wonders. The previous owner of the Streetfighter left his phone mount in place. I took it off. After spending the last 5 weeks in California, I'm kind of thinking I might try it when the weather gets better. I'd have been lost without it.