Well I only have one personality but I have been happy with a program called Spector Pro. It is not really a filter. It records everything your kids do online and allows you to block sites you don't like.
I think most kids find the filters really easy to defeat, IMO, anyhow you can check out
Computer and Internet Monitoring Software if you think you are interested.
It has been heartily endorsed by Hockey Moms 23 thru 39
