It’s worth mentioning here the differences between OpenDNS and Umbrella. We have an MSSP (Managed Security Services Provider) agreement with Cisco to sell Cisco Umbrella here in the UK.
The reason I wanted to chime in, is although this is a fantastic comparison (good job Tom) it did fall in to the trap of referring to OpenDNS as Umbrella interchangeably on numerous occasions and they are NOT the same thing.
To clarify, selective proxy which scans domains for advanced threats (including Threat Grid for malware scanning) is a feature of certain Umbrella packages but NOT available from OpenDNS.
That is not to say that I stand behind the performance results for OpenDNS, because they are agreeably not the best. I’m simply saying that you can’t test OpenDNS and state that the results are for ‘Umbrella’ because in a production environment they are different things and have different capabilities for malware filtering in particular.