Little late on this but I use
Malwarebytes - freebie. Need to buy it and make it run with ESET Security Suite.
ESET Security Suite - which is the firewall and NOD32 antivirus.
Been using the ESET stuff for 9 or so years and so far, the only thing that got through was a pdf trojan a week ago. Not sure how that happened, might have been my doing as I sometimes tinker with settings that I should probably leave alone. Aside from my own stupidity, ESET have been bullet proof protection for me.
I gave up on Norton years ago, it eventually harmed/hampered every PC that I put it on. Was using Outpost Firewall before I went to ESET. I started having problems with Outpost stability so dropped them. Shame as it was a really good firewall back them. I think they where going through some development/company issues at the time.