I have used ESET (Nod32) for about 8 years - ever since a virus wrecked my computer. I buy it for 2 years at a time and it has caught every virus that has hit any computer I owned. I buy single owner and load it on Kokopuf's and my 3 computers. If you're interested, here's a direct link
http://www.eset.com/us/search-brand?CMP=KNC-g-ag&gclid=CPnEus-DgagCFQli2godQiU6rA.
The techie who repaired my computer tho those many years ago told me about it. Whenever we get a new computer, I have to get rid of Norton, then I download Eset and voila everything works like a charm!