I use a Garmin Edge 520 mounted on my bike (bicycle). It doubles as my fitness-logger so I'm not suggesting anyone buys it just for some maps, but I really like

I use a Garmin Edge 520 mounted on my bike (bicycle). It doubles as my fitness-logger so I'm not suggesting anyone buys it just for some maps, but I really like it. It's not as smooth as using a phone when it comes to maps, but for preplanned routes it works great. It has made 4-6 hour bike-rides on unknown roads much easier. No more stops at intersections to struggle with the phone to see where to go, can just keep the speed up looking at the display once in a while. The display is also very easy to read in sunlight.