Basic satnav - which is best?

[acme]

Appreciate this is probably often asked etc, but can anyone recommend a satnav, or indeed ones to avoid?

This is for my mother so a basic one that is easy to operate would be best, I'm thinking a tomtom, fairly obvious I guess but I only ever use the one in the car or phone based ones.

Cheers for any advice

[acme]

Perhaps I didn't articulate but needs to be a regular non phone type. She doesn't have a smart phone

[acme]

Thanks for all the replies. Bought her a tom tom with a six inch screen to aid viewing.

Cheers