I never brought it I ended up get 5 lisences for Norton that I gave away. Got 3 lisences for Symantec Endpoint (That was ok back in the day)
Then again I beta tested Panda Cloud and got a free Pro versions due that i gave alot of feedback! :)
Now I stick to NOTHING, yeah that simple. Nothing Windows Defender built in and a firewall. I kind of figured that its not needed as i normally run with alot of scripts and blocks.
Most malware, and virus these days are built to attack your browser, and the plugins you use (90% is the plugins like java, flash, shockwave etc)
Having denial of js, iframes and of course any 3rd party loading scripts (Disconnect)
Add this on top with sandbox for running my cracks and keygens should protect most of it.
Then again I ONLY run in Windows when I play games the rest i am running on Linux!