I wonder what secure DNS are you guys using and why ? I am using only OpenDNS (set on my router), I know there is Comodo, Google, Norton's and so on. I wanna know why are you using that and why you started using
OpenDNS should be fine on filtering numerous categories of known blacklist however Norton being under of security firm have more advantage in Malware/Phishing protection.
Other case are concern on browsing performance from adjusting the server.