[Aura]

Everyone who said Malwarebytes are just plainly wrong.
As for Microsoft Security Essentials, this product is barely up to date and cannot compete with other free Antiviruses.
Bitdefender products are just too buggy.
AVG is big plain technical shitware that crashes your Windows and bloat it.
McAfee and Norton : no need to mention what's wrong with these, it's been obvious for years.

Only free Antiviruses worth using : avast!, Avira, Qihoo, Panda and Comodo.
Only paid Antiviruses worth buying : Kaspersky and ESET products.

That's it.