Sadly this area is a confuser.
While you can try such the ugly truth is that there is no known real-time protection that works to cover all known threats today. Most of the protection is "us."
Here I have an antivirus installed then beefed up protection by not using IE then adding WOT (web of trust) and AdBlockPlus to another browser.
Scans with the usual titles come up empty so I have not considered installing anything else.