Thanks for all the help.
I already have a Kindle Fire tablet-of-sorts (wifi only), so I can't justify to the Treasurer buying ANOTHER one for a GPS (unless I update my phone to an iPhone - and THAT is at least 6~12 months down the financial track).
The Garmin sounds OK.
The VMS I was conned into paying $700 for, because it was "the HEMA made by Hema's supplier as a 'home brand' version" was $h!t, and ended its days (after 3 mailings back to mfr for repairs) in a garbage bin after it karked it for a fourth time in 12 months.

The Navman MY60T was as good as most GPSs, occasionally leading us around the world for sixpence, but what we were NOT told when we bought it was that it was Windoze-ONLY!
It has karked it in a spectacular way... nothing but static on the screen. No point sending it back for repairs. It cost us under $200. Even if it WAS repaired, I still couldn't update the maps without hoping to meet someone on the road with a Windoze machine and a Navman.

Simpler to replace it with something that speaks Macintosh and start again.