We have about 20 laptops running Windows Vista or 7 and we're looking for a new antivirus solution. We're obviously looking for the lightest sufficient solution.
Several vendors seem to sell an antivirus product and an internet security suite (or whatever) product that includes antivirus, firewall and some other stuff. With recent versions of Windows, is it sufficient to get just antivirus software and use Windows utilities for the rest? Do these security suites provide something significantly more or significantly better that Windows firewall, Windows defender and whatever else that comes with Windows? Is there a relevant threat that would be missed with plain Windows and antivirus?