You can try refining the distances to see how the different products compare. If you fiddle with it a bit, you'll see that the results do vary from country to country. So, "good enough" will depend on some combination of your tolerance for error + which countries you care about.
https://www.maxmind.com/en/geoip2-city-database-accuracy
To get the actual product comparisons, you'll need to enter a country in the input box. For instance:
https://www.maxmind.com/en/geoip2-city-database-accuracy?cou...
You can try refining the distances to see how the different products compare. If you fiddle with it a bit, you'll see that the results do vary from country to country. So, "good enough" will depend on some combination of your tolerance for error + which countries you care about.