I have a magellin (bout 4 or 5 year old). Works perfect for us because i drive (of course) and my wife is dyslexic so her reading a map on the go is an exercise in frustration for both of us.
i hear some of em (not sure what brands) you can download different voices like a drill Sargent who yells at ya. Might entertain the kids a bit.
garmin. The new ones have a "traffic" button you can hit when you find yourself jammed up somewhere and need the easiest detour, rather than end up on the east side/ south end where you'll get killed if you pull over to input new data.
As for folks like rusty who will get to that part of town and need to open a paper map, he's just toast. :icon_lol: