Upgrading TomTom- to a new model

Tighnamara Registered Users Posts: 2
Apprentice Traveler
My first car GPS was the TomTom One XL and then I purchased the XXL 540-M. This has been great but it has run out of memory and can no longer be updated (and there is no SD card slot). The many new products (whether TomTom, Garmin or which ever) are all very confusing and just wondering what device is equal to or at least the next step up to the XXL? I don't have a Smartphone so don't necessarily need options that rely on that. Any help would be appreciated. Thanks,