We are actually using MaxMind at the moment, even though we are in the process of building our own GeoDatabase. Our API differs from the services you specified since we offer many more data points like:

- currency data

- timezones data

- user agent data

- crypto data

On top of that, our API is extremely easy to use with two simple endpoints to get IP and ASN insights. Also, we don't apply any data segmentation to our responses.

Last but not least, our prices put us on a league of our own with a massive Free tier allowing up to 250,000 requests per month. More info on: https://smartip.io/#pricing-section