Depends what you use if for really
Map updates are the biggest con with sat-navs.
The paper atlas in my car is dated -something like- 2007 and it’s still perfectly valid 99.9% of the time.
If it’s just one town to another, A-to-B sort of stuff, anything will do that.
If you need to find specific addresses within towns and cities, the latest ones are much easier to use.
I pretty much use them to pin down a certain address and when it’s wet and dark in the rush hour and you’re stuck behind a bus in a city you don’t know, the latest Tomtoms are very good.
I also have a Garmim Zumo on my bike, which I like but it only gets used for pre-planned route following rather than seeking a specific place or address.
I prefer the Tomtom interface though.