In reply to rossowen:
They often read out rubbish tho'. e.g. 'keep left' rather than 'take next motorway exit' where actually having a quick peaky at the screen can help. I would suggest that Garmin are generally simple, but miss some nice features of the latest TOm Tom. I'd but a Tom TOm one IQ... or rather I woudn't. As I have one that works just fine thank you, but is a bit rubbish at times.
Expect her to crash in the first week of having it
She'll need to train herself to ignore most of the messages and read the road, not just listen to the messages. Its not a replacement for a good passenger