Bought a Zumo earlier this year, after using Google maps I didn't like it. The search and navigation is slow and inferior.
I now use Google maps again but via an Android auto/Carplay screen so my phone stays in my pocket.
You just start the navigation on your phone even before you go out and lock the phone screen. Go out switch the ignition on, the screen boots up and goes straight to navigation. It also displays texts and plays music via Bluetooth if you're bothered.
Oh another plus point is they are only about £130
https://amzn.eu/d/f8YiwQ7