Hi Claude,
I use a Garmin every day. Updates are expensive. Not really necessary on a regular basis. It is very good for my purposes. I have new addresses every day.
I would have puchased the Tom Tom with 45 countries listed. Had I known it existed. She who must be obeyed has the travel bug.
It would have been great in NZ recently. I certainly missed having one there as maps are rather poor detail for the whole of NZ. A GPS would have saved several wrong early turns. We managed but not without having to ask directions several times.
Things to look at that would help is when entering street info that is in a neighboring suburb. The Gamin spits it back. The suburb must be correct.
Recent found list. Favorites list. Quickest way, shortest way to destination.
Most systems have the red light cameras, school zones etc. They often are not complete. Use with common sense.
Cheers Marty