Mike,
Any sat nav will do what you outlined in your opening post so the model is not too important.
I have been using a sat nav for around ten years, an obscure German manufacturer called Medion.
When I came to replace my first model five years ago because it only had UK/Ireland maps and I wanted European maps I found that it was cheaper to buy a new upgraded model than update the maps. Many sat nav manufacturers now provide life time map upgrades. This would be a major factor for me when purchasing a new sat nav as would be European maps.
Cheers,
Lyall