What's the best virus software to purchase?

[eepto0237]

I folks. I'd like your opinion on what the best software is to protect my computer from
being attacked by virus' etc.
I purchased Kaspersky from my local Best Buy but am peeved that the salesman didn't tell me it was only good for a year. It just expired and I'd like to know if there's something better.
Thanks.

 

[JCB1]

personally the best i have used is f-secure Antivirus Software, Anti-Spyware and Internet Security | F-Secure