Recommend me a Car GPS for my wife.

a nursing home haha...mines only messed up by not finding certain roads but thats just because of all the construction going on and i didnt update the gps
 
I have the first version of the TomTom One, it is highly recommended. It is faster than the newer versions of the TomTomXXL and many other brands.
The only problem of the TomTom One's is that batteries only last 2 hours, so you have to use it connected to the car's plug.

About maps, I think there are only 2 companies that provide maps to all GPS manufacturers, so it that area all seem to be the same.
 
Uh oh, woman drivers...

Haha, just kidding! The only ones I have really used much here are Tom Toms or whatever theyre called, and those things are the shit! Mean as!!