Geo Location Statistics required

We have configured piwik on two servers behind load balancer.

We have configured more than 25 websites and we are using MaxMind free database but now for more accuracy we are deciding to select between IP2Location and MaxMind.

Are you have any statistics which one is better?

One of the concerning issue is MaxMind licensing as maxmind requires licence for each website configured whereas IP2Location only require license for servers which are two in our case.

Please help us to decide.