I have never heard of watchgaurd av, so definitely cannot recommend it. As for your friends, they are totally wrong on the point about free antivirus. Most techs, myself included, do not like paying for av. Example, I recently watched a review of mcafee 2010 or 2011 the guy tested it and threw 70 known viruses and malware at it. Picked up or 4 or 5. A free one, Avast was tested too, out of 10, it caught around 75% of the things they attacked it with. I just personally dont see the need to buy antivirus anymore when great free ones are available. If you need more protection, there are free firewall programs as well. But remember, many free antivirus programs are offered by companies trying to upsell you into buying their paid products, so it is going to be good because they want you to buy someday.