Just to up-date this post.
We have just come back from a week in the Isle of Wight and I gave my new sat-nav it's first big test,
It was very helpful, we never got lost once
.
I had to disable the voice control as it kept asking what I wanted
, I have to say 'Hello Tom Tom' to wake it up, but it would come on when we were just in normal talk
and you could miss your directions.
The speed camera warning seems good ( it only tells you about speed cameras / hazards etc. once a route is set and not free running ).
There are a few places that the map does not match the road lay out but you can let tom-tom know about them.
Why did I wait until I was 68 before I bought one.
also it's a 100% better than a free phone app type, with a 6" screen I can see well.