We currently use Kaspersky Endpoint 10 but we've had nothing but problems with it so we are planning on switching to a different solution when it expires in about a month.
We have around 170-200 Windows 7 machines. Would rather it not be a resource hog like Kaspersky. Needs to have some sort of website blocking option.
I got a trial of Webroot and I like it a lot so far but there doesn't seem to be an option to block websites.