I'm surprised that everyone is going for expensive bike computers these days. Am I the only one who simply uses Google Maps on their phone for navigation? I just look at the map with my eyes and then ride. If I forget where I need to go, I take the phone out and look at it again. Why do I need to have a map continuously in front of me? I use a Garmin GPS watch to track my path and ride statistics for later review. On the bike I use a cheap old computer just to tell speed and distance.
Remember we're on a forum for people who really love cycling, so what you see in here skews toward people who prioritize this hobby very highly. The Garmin bike computers don't even work as well as the watches, but they have bigger screens that are more convenient to see while you're riding. Out in the world, expensive bike computers are less common than in here.