You can look yourself its not hard,besides if you want to waste your money on a paid AV that's s fine its your money not mine

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Also consider no AV is 100% foolproof, all AV companies are always playing catchup to new viruses that are always being released into the wild.
Common sense goes a long way,what I'm saying using common sense and a good OS like Win7 x64 with UAC enabled,AV and something like Anti-Malwarebytes goes a long way to offer very good protection(most users have a hardware firewall too),you don't NEED to pay for AV or protection.