Kaspersky

At this point there's not much difference on the top ones I think

So the only correct answer is "Not Norton"

ESET i guess =)

Kaspersky

Avast is the best for my set up never had a problem

I use Kaspersky and it does not use too much CPU. Norton is by far the most useless antivirus, I don't understand why it is so high in rating.

norton 360..using it for past 4 years

I have been using Norton 360 for the last 3 years and has been great, no issues with my pc and not slowed it down etc

Does have a bad rep, maybe it's from the old days I don't know

I don't know how many years with NOD antivirus and yet still do not see any virus, worm, malware... seriously it's a good effective and lightweight resources antivirus and unobtrusive.

McAfee