Currently using the free NextDNS. Although NextDNS itself seems abandoned, the software is used for DNS0.eu (so it is proabably well funded and getting maintenance), I seem to get all those paid AdGuard DNS features for free with NeextDNS. So I am asking: what is the compelling reason to switch from free NextDNS to paid AdGuardDNS (with NextDNS you can use multiple free acounts, so the 300.000 maximum resolves is only a theoretical limitatiomn).