Chose Cisco Umbrella
OpenDNS has great bang for the buck. We also run SonicWALL web content filters for most all of our clients, they make a great pair. In the past we've run Websense enterprise (great product, but pricey and their cloud version was sluggish back a few years ago.)
Independently Invited by TrustRadius
A de minimis incentive was given to thank the reviewer for their time. The incentive was not used to bias or drive a particular response, nor was the incentive contingent on a positive endorsement. More Info