Hi hatkinson,
welcome to Questions & Answers..:smileyhappy:
You'll probobly get conflicting answers but I use Kasperskyinternet security, which includes AV and a firewall, etc, if you want a free AV the AVG is always a popular choice..
You may find googling for AV reviews useful, like this from PC Pro for example - http://www.pcpro.co.uk/reviews/internet-security
