Been looking for a standalone sat nav as you are not allowed to use your phone if you are on your L's or P's, this is the one I settled on after a bit of research, though there are still some conflicting reviews floating around. Been waiting for a sale on it, it was usually being sold for $350, this is the first time i've seen it lower than that.
It looks like JB and other stores have it on sale now too:
https://www.ja-gps.com.au/Garmin/drivesmart-65-and-live-traf…
https://www.jbhifi.com.au/products/garmin-drivesmart-65-mt-s…
I'm pretty sure same rules apply to satnav as to your phone. You can't touch it while driving.
So save your money and use your phone for navigation