not yet needed to use it in Europe, but you never know! I think it's great, large screen, simple to use, loads of extras (find the nearest petrol station, train station, car park, notifies of all speed cameras etc), and good updates from their website.
they seem to have come down in price, and I love mine :o)
to be honest, my friend's husband works for TomTom so I got a good deal on just that model. they do the same thing just for the UK. boyfriend has a Panasonic and it appears to be cr*p!
I have no idea when I might it in Europe.. probably never!