Test of the DNS Servers... on this test, the best performers were:
1. Superhub 2 providing near zero cached response time
2. VM Primary, better uncached then the SH2, VM Secondary pretty good too
3. Cloudflare 1.1.1.1 - ABSOLUTE BEST for DOTCOM test, best of the rest for uncached.
I guess my best maximum config would be the SH2 as primary, and 1.1.1.1 as backup, though unless the underlying VM DNS is having a bad day, there's not much wrong with the bonus local cache of the SH2 - unless you dislike NXdomain trapping. Cloudflare does not trap, but according to the scan neither does OpenDNS - ah, they used to trap but now they don't.