I had my folks get McAffee. I live 1/2 hour's drive away and I don't have as much free time to help them resolve PC problems like I used to.
For my laptop, I'm trying out the free Avast! anti-virus. If I get intense malware on the laptop I can just blow everything away and start over in less than an hour.
I have Trend-micro on my machine at work. I've also heard that Kapersky is good. Norton is very effective, but it robs your machine of resources.
Thanks for all the responses.