Eirikr70 AdGuard, the only reason is I use AdGuardHome on my local network and it makes me happy. I didn't much study the alternatives.
EarlOfBurl personalDNSfilter's DNS or alternatively my unbound/PiHole. Don't use a VPN that much atm, just for "stuff".
Clueless I'm using MullvadDNS with the family option. I tried a few adblocking test sites and it seems to block most stuff very well.
ErnestThornhill I use Proton VPN with its NetShield Ad-blocker enabled and I keep the level of protection set to the default "Block malware, ads, & trackers."
mmmm Always the DNS of the VPN I’m using, either Proton or Mullvad depending on the device I’m using.
FlipSid Since I'm not using a VPN at the moment (if I where it would be Protons VPN, DNS etc) I'm on dns0/zero for testing, usually Quad9.
SoulKeeper I use NextDNS with custom settings suggested here: https://github.com/yokoffing/NextDNS-Config