My current pick for security products are one solution for Windows boxes: Kaspspersky
You can get it free after rebate, too
I've been doing that for two years running now. Used to be an AVG fan but that went downhill without a driver (recent problem
). Kaspersky is also the solution I've used where I volunteer as a technology chair and it has a sweet set of central administration tools.
Once upon a time I ran many products, but troubleshooting every time something went wrong almost always resulted in a realization that two of the security products interfered with each other, so I abandoned things like Spyhunter (my last fav spyware/malware tool), Adware, Spybot.
Norton and McAfee are renowned for hogging resources. Long, long ago Norton was tops. I also used ZoneAlarm for a while until my license for updates expired and the tool refused to continue working at all (even with the old libraries), which sent me over the edge
Yes, using only a single product opens me up to some issues, but I've decided that they are less likely and more easily dealt with than dealing with frequent software collisions. YMMV.
How about a real IT security solution? I'm sure your router has a firewall (step 1). I'm sure you use one system for browsing the net and doing all the other entertaining stuff including email (step 2). How about also setting up a Linux box on which you only do your serious
stuff, like banking, investing, or work access? No file sharing on it, closed up firewall (usually default with Linux), and frequently patched. Your IT security guys would probably really appreciate that and AFAIC, its the next step in staying ahead of the vast majority of crackers.