Finally got around to setting up network wide ad block, got tired of seeing ads on mobile/ipad at home. Decided to try Adguard Home instead of Pihole, seems that they're both equally effective. Happy so far!
I did a bunch of searching of comparisons and most people seem to be happy with either. I'm not really sure why I chose Adguard, but if it underperforms it should be easy enough to switch
You can do that, however I found it doesn't show breakdown by client that way, it just shows the router's address as the only client.
I just have DHCP server on the Fritzbox setting the Adguard address for DNS server. I had to turn off DNSv6 server in the Fritzbox because I couldn't set a IPv6 DNS server address for Adguard as the box it's installed on doesn't have IPv6 enabled.
You can set as many upstream DNS providers up in Adguard as you want. I'm currently only using google and cloudflare.
That works; but it is limited. I haven't bothered to set my PiHole as my DHCP srever, but if you do you get much better control over who is seeing what.